diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index 4b00c11b27c..df4c992a046 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -573,7 +573,7 @@ module ProjectsHelper
       lfsHelpPath: help_page_path('workflow/lfs/manage_large_binaries_with_git_lfs'),
       pagesAvailable: Gitlab.config.pages.enabled,
       pagesAccessControlEnabled: Gitlab.config.pages.access_control,
-      pagesHelpPath: help_page_path('user/project/pages/introduction', anchor: 'gitlab-pages-access-control-core-only')
+      pagesHelpPath: help_page_path('user/project/pages/introduction', anchor: 'gitlab-pages-access-control-core')
     }
   end
 
diff --git a/app/models/list.rb b/app/models/list.rb
index b53e2fb7c33..13c42b55bf7 100644
--- a/app/models/list.rb
+++ b/app/models/list.rb
@@ -50,7 +50,7 @@ class List < ApplicationRecord
       list_ids = items.map { |i| i[:list_id] }
       user_ids = items.map { |i| i[:user_id] }
 
-      ListUserPreference.where(list_id: list_ids, user_id: user_ids).find_each do |preference|
+      ListUserPreference.where(list_id: list_ids.uniq, user_id: user_ids.uniq).find_each do |preference|
         loader.call({ list_id: preference.list_id, user_id: preference.user_id }, preference)
       end
     end
diff --git a/changelogs/unreleased/fix-service-desk-forward.yml b/changelogs/unreleased/fix-service-desk-forward.yml
new file mode 100644
index 00000000000..e675eaf9b39
--- /dev/null
+++ b/changelogs/unreleased/fix-service-desk-forward.yml
@@ -0,0 +1,6 @@
+---
+title: Do not strip forwarded message body when creating an issue from Service Desk
+  email.
+merge_request: 18196
+author:
+type: fixed
diff --git a/doc/administration/auth/how_to_configure_ldap_gitlab_ce/index.md b/doc/administration/auth/how_to_configure_ldap_gitlab_ce/index.md
index 4b6dc803189..d8a1d469726 100644
--- a/doc/administration/auth/how_to_configure_ldap_gitlab_ce/index.md
+++ b/doc/administration/auth/how_to_configure_ldap_gitlab_ce/index.md
@@ -18,12 +18,12 @@ The main reason organizations choose to utilize a LDAP server is to keep the ent
 
 There are many commercial and open source [directory servers](https://en.wikipedia.org/wiki/Directory_service#LDAP_implementations) that support the LDAP protocol. Deciding on the right directory server highly depends on the existing IT environment in which the server will be integrated with.
 
-For example, [Active Directory](https://technet.microsoft.com/en-us/library/hh831484(v=ws.11).aspx) is generally favored in a primarily Windows environment, as this allows quick integration with existing services. Other popular directory services include:
+For example, [Active Directory](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/hh831484(v=ws.11)) is generally favored in a primarily Windows environment, as this allows quick integration with existing services. Other popular directory services include:
 
-- [Oracle Internet Directory](http://www.oracle.com/technetwork/middleware/id-mgmt/overview/index-082035.html)
+- [Oracle Internet Directory](https://www.oracle.com/middleware/technologies/internet-directory.html)
 - [OpenLDAP](http://www.openldap.org/)
 - [389 Directory](http://directory.fedoraproject.org/)
-- [OpenDJ](https://forgerock.org/opendj/)
+- [OpenDJ (Renamed to Foregerock Directory Services)](https://www.forgerock.com/platform/directory-services)
 - [ApacheDS](https://directory.apache.org/)
 
 > GitLab uses the [Net::LDAP](https://rubygems.org/gems/net-ldap) library under the hood. This means it supports all [IETF](https://tools.ietf.org/html/rfc2251) compliant LDAPv3 servers.
@@ -32,9 +32,9 @@ For example, [Active Directory](https://technet.microsoft.com/en-us/library/hh83
 
 We won't cover the installation and configuration of Windows Server or Active Directory Domain Services in this tutorial. There are a number of resources online to guide you through this process:
 
-- Install Windows Server 2012  - (`technet.microsoft.com`) - [Installing Windows Server 2012](https://technet.microsoft.com/en-us/library/jj134246(v=ws.11).aspx)
+- Install Windows Server 2012  - (`technet.microsoft.com`) - [Installing Windows Server 2012](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/jj134246(v=ws.11))
 
-- Install Active Directory Domain Services (AD DS) (`technet.microsoft.com`)- [Install Active Directory Domain Services](https://technet.microsoft.com/windows-server-docs/identity/ad-ds/deploy/install-active-directory-domain-services--level-100-#BKMK_PS)
+- Install Active Directory Domain Services (AD DS) (`technet.microsoft.com`)- [Install Active Directory Domain Services](https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/install-active-directory-domain-services--level-100-#BKMK_PS)
 
 > **Shortcut:** You can quickly install AD DS via PowerShell using
 `Install-WindowsFeature AD-Domain-Services -IncludeManagementTools`
@@ -97,7 +97,7 @@ People Ops US     GitLab.org/GitLab INT/Global Groups/People Ops US
 Global Admins     GitLab.org/GitLab INT/Global Groups/Global Admins
 ```
 
-> See [more information](https://technet.microsoft.com/en-us/library/ff730967.aspx) on searching Active Directory with Windows PowerShell from [The Scripting Guys](https://technet.microsoft.com/en-us/scriptcenter/dd901334.aspx)
+> See [more information](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-powershell-1.0/ff730967(v=technet.10)) on searching Active Directory with Windows PowerShell from [The Scripting Guys](https://devblogs.microsoft.com/scripting/)
 
 ## GitLab LDAP configuration
 
diff --git a/doc/administration/auth/how_to_configure_ldap_gitlab_ee/index.md b/doc/administration/auth/how_to_configure_ldap_gitlab_ee/index.md
index 9977f9aee14..f0eb6c5180b 100644
--- a/doc/administration/auth/how_to_configure_ldap_gitlab_ee/index.md
+++ b/doc/administration/auth/how_to_configure_ldap_gitlab_ee/index.md
@@ -110,7 +110,7 @@ gitlab_rails['ldap_servers'] = {
 Integration of GitLab with Active Directory (LDAP) reduces the complexity of user management.
 It has the advantage of improving user permission controls, whilst easing the deployment of GitLab into an existing [IT environment](https://www.techopedia.com/definition/29199/it-infrastructure). GitLab EE offers advanced group management and multiple LDAP servers.
 
-With the assistance of the [GitLab Support](https://about.gitlab.com/support) team, setting up GitLab with an existing AD/LDAP solution will be a smooth and painless process.
+With the assistance of the [GitLab Support](https://about.gitlab.com/support/) team, setting up GitLab with an existing AD/LDAP solution will be a smooth and painless process.
 
 <!-- ## Troubleshooting
 
diff --git a/doc/administration/auth/ldap-ee.md b/doc/administration/auth/ldap-ee.md
index d9b7d8b4382..924cc153b0c 100644
--- a/doc/administration/auth/ldap-ee.md
+++ b/doc/administration/auth/ldap-ee.md
@@ -415,7 +415,7 @@ main: # 'main' is the GitLab 'provider ID' of this LDAP server
 
 [^1]: In Active Directory, a user is marked as disabled/blocked if the user
       account control attribute (`userAccountControl:1.2.840.113556.1.4.803`)
-      has bit 2 set. See <https://ctogonewild.com/2009/09/03/bitmask-searches-in-ldap/>
+      has bit 2 set. See <https://ctovswild.com/2009/09/03/bitmask-searches-in-ldap/>
       for more information.
 
 ### User DN has changed
diff --git a/doc/administration/auth/ldap.md b/doc/administration/auth/ldap.md
index ee3a992cc72..e02ce1c0a21 100644
--- a/doc/administration/auth/ldap.md
+++ b/doc/administration/auth/ldap.md
@@ -408,7 +408,7 @@ group, you can use the following syntax:
 ```
 
 Find more information about this "LDAP_MATCHING_RULE_IN_CHAIN" filter at
-<https://docs.microsoft.com/en-us/windows/desktop/ADSI/search-filter-syntax>. Support for
+<https://docs.microsoft.com/en-us/windows/win32/adsi/search-filter-syntax>. Support for
 nested members in the user filter should not be confused with
 [group sync nested groups support](ldap-ee.md#supported-ldap-group-typesattributes). **(STARTER ONLY)**
 
diff --git a/doc/administration/housekeeping.md b/doc/administration/housekeeping.md
index 43c9679be65..9083619841e 100644
--- a/doc/administration/housekeeping.md
+++ b/doc/administration/housekeeping.md
@@ -1,6 +1,6 @@
 # Housekeeping
 
-> [Introduced][ce-2371] in GitLab 8.4.
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/issues/3041) in GitLab 8.4.
 
 ## Automatic housekeeping
 
@@ -23,16 +23,12 @@ For example in the following scenario a `git repack -d` will be executed:
 When the `pushes_since_gc` value is 50 a `repack -A -d --pack-kept-objects` will run, similarly when
 the `pushes_since_gc` value is 200 a `git gc` will be run.
 
-- `git gc` ([man page][man-gc]) runs a number of housekeeping tasks,
+- `git gc` ([man page](https://mirrors.edge.kernel.org/pub/software/scm/git/docs/git-gc.html)) runs a number of housekeeping tasks,
   such as compressing filerevisions (to reduce disk space and increase performance)
   and removing unreachable objects which may have been created from prior invocations of
   `git add`.
-- `git repack` ([man page][man-repack]) re-organize existing packs into a single, more efficient pack.
+- `git repack` ([man page](https://mirrors.edge.kernel.org/pub/software/scm/git/docs/git-repack.html)) re-organize existing packs into a single, more efficient pack.
 
 You can find this option under your project's **Settings > General > Advanced**.
 
 ![Housekeeping settings](img/housekeeping_settings.png)
-
-[ce-2371]: https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/2371 "Housekeeping merge request"
-[man-gc]: https://www.kernel.org/pub/software/scm/git/docs/git-gc.html "git gc man page"
-[man-repack]: https://www.kernel.org/pub/software/scm/git/docs/git-repack.html
diff --git a/doc/administration/index.md b/doc/administration/index.md
index db9ea71ac1f..f79719e1d3e 100644
--- a/doc/administration/index.md
+++ b/doc/administration/index.md
@@ -97,7 +97,7 @@ Learn how to install, configure, update, and maintain your GitLab instance.
 
 ### GitLab platform integrations
 
-- [Mattermost](https://docs.gitlab.com/omnibus/gitlab-mattermost/): Integrate with [Mattermost](https://about.mattermost.com/), an open source, private cloud workplace for web messaging.
+- [Mattermost](https://docs.gitlab.com/omnibus/gitlab-mattermost/): Integrate with [Mattermost](https://mattermost.com), an open source, private cloud workplace for web messaging.
 - [PlantUML](integration/plantuml.md): Create simple diagrams in AsciiDoc and Markdown documents
   created in snippets, wikis, and repos.
 - [Web terminals](integration/terminal.md): Provide terminal access to your applications deployed to Kubernetes from within GitLab's CI/CD [environments](../ci/environments.md#web-terminals).
diff --git a/doc/administration/pages/index.md b/doc/administration/pages/index.md
index 8d35262b45e..cacfb73451c 100644
--- a/doc/administration/pages/index.md
+++ b/doc/administration/pages/index.md
@@ -305,7 +305,7 @@ Pages access control is disabled by default. To enable it:
    ```
 
 1. [Reconfigure GitLab][reconfigure].
-1. Users can now configure it in their [projects' settings](../../user/project/pages/introduction.md#gitlab-pages-access-control-core-only).
+1. Users can now configure it in their [projects' settings](../../user/project/pages/introduction.md#gitlab-pages-access-control-core).
 
 ### Running behind a proxy
 
diff --git a/doc/administration/pages/source.md b/doc/administration/pages/source.md
index 08200f2b426..be8bba3c95b 100644
--- a/doc/administration/pages/source.md
+++ b/doc/administration/pages/source.md
@@ -411,7 +411,7 @@ Pages access control is disabled by default. To enable it:
      -auth-server <URL of the GitLab instance>
    ```
 
-1. Users can now configure it in their [projects' settings](../../user/project/pages/introduction.md#gitlab-pages-access-control-core-only).
+1. Users can now configure it in their [projects' settings](../../user/project/pages/introduction.md#gitlab-pages-access-control-core).
 
 ## Change storage path
 
diff --git a/doc/administration/troubleshooting/debug.md b/doc/administration/troubleshooting/debug.md
index be475a0520f..3007b711405 100644
--- a/doc/administration/troubleshooting/debug.md
+++ b/doc/administration/troubleshooting/debug.md
@@ -211,5 +211,5 @@ The output in `/tmp/unicorn.txt` may help diagnose the root cause.
 
 ## More information
 
-- [Debugging Stuck Ruby Processes](https://blog.newrelic.com/2013/04/29/debugging-stuck-ruby-processes-what-to-do-before-you-kill-9/)
+- [Debugging Stuck Ruby Processes](https://blog.newrelic.com/engineering/debugging-stuck-ruby-processes-what-to-do-before-you-kill-9/)
 - [Cheatsheet of using gdb and ruby processes](gdb-stuck-ruby.txt)
diff --git a/doc/administration/troubleshooting/gitlab_rails_cheat_sheet.md b/doc/administration/troubleshooting/gitlab_rails_cheat_sheet.md
index 9d419e23a9f..cbea1853e52 100644
--- a/doc/administration/troubleshooting/gitlab_rails_cheat_sheet.md
+++ b/doc/administration/troubleshooting/gitlab_rails_cheat_sheet.md
@@ -701,7 +701,8 @@ MergeRequests::RebaseService.new(m.target_project, u).execute(m)
 
 ### Cancel stuck pending pipelines
 
-See <https://gitlab.com/gitlab-com/support-forum/issues/2449#note_41929707>.
+For more information, see the [confidential issue](../../user/project/issues/confidential_issues.md)
+`https://gitlab.com/gitlab-com/support-forum/issues/2449#note_41929707`.
 
 ```ruby
 Ci::Pipeline.where(project_id: p.id).where(status: 'pending').count
diff --git a/doc/administration/troubleshooting/kubernetes_cheat_sheet.md b/doc/administration/troubleshooting/kubernetes_cheat_sheet.md
index 233cfb9f7cf..7c2c2050b12 100644
--- a/doc/administration/troubleshooting/kubernetes_cheat_sheet.md
+++ b/doc/administration/troubleshooting/kubernetes_cheat_sheet.md
@@ -191,8 +191,8 @@ and they will assist you with any issues you are having.
 
 ## Installation of minimal GitLab config via Minukube on macOS
 
-This section is based on [Developing for Kubernetes with Minikube](https://gitlab.com/gitlab-org/charts/gitlab/blob/master/doc/minikube/index.md)
-and [Helm](https://gitlab.com/gitlab-org/charts/gitlab/blob/master/doc/helm/index.md). Refer
+This section is based on [Developing for Kubernetes with Minikube](https://docs.gitlab.com/charts/development/minikube/index.html)
+and [Helm](https://docs.gitlab.com/charts/installation/tools.html#helm). Refer
 to those documents for details.
 
 - Install Kubectl via Homebrew:
diff --git a/doc/api/README.md b/doc/api/README.md
index d037ab1a95f..6858e5b7d56 100644
--- a/doc/api/README.md
+++ b/doc/api/README.md
@@ -329,7 +329,7 @@ curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab
 
 ### Pagination Link header
 
-[Link headers](http://www.w3.org/wiki/LinkHeader) are sent back with each
+[Link headers](https://www.w3.org/wiki/LinkHeader) are sent back with each
 response. They have `rel` set to prev/next/first/last and contain the relevant
 URL. Please use these links instead of generating your own URLs.
 
@@ -563,7 +563,7 @@ The correct encoding for the query parameter would be:
 ## Clients
 
 There are many unofficial GitLab API Clients for most of the popular
-programming languages. Visit the [GitLab website] for a complete list.
+programming languages. Visit the [GitLab website](https://about.gitlab.com/partners/#api-clients) for a complete list.
 
 ## Rate limits
 
@@ -572,7 +572,6 @@ For administrator documentation on rate limit settings, see
 specifically used by GitLab.com, see
 [GitLab.com-specific rate limits](../user/gitlab_com/index.md#gitlabcom-specific-rate-limits).
 
-[GitLab website]: https://about.gitlab.com/applications/#api-clients "Clients using the GitLab API"
 [lib-api-url]: https://gitlab.com/gitlab-org/gitlab-foss/tree/master/lib/api/api.rb
 [ce-3749]: https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/3749
 [ce-5951]: https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/5951
diff --git a/doc/api/graphql/index.md b/doc/api/graphql/index.md
index eb5faac5ede..9eb254b4677 100644
--- a/doc/api/graphql/index.md
+++ b/doc/api/graphql/index.md
@@ -42,7 +42,7 @@ A first iteration of a GraphQL API includes the following queries
 ### Multiplex queries
 
 GitLab supports batching queries into a single request using
-[apollo-link-batch-http](https://www.apollographql.com/docs/link/links/batch-http). More
+[apollo-link-batch-http](https://www.apollographql.com/docs/link/links/batch-http/). More
 info about multiplexed queries is also available for
 [graphql-ruby](https://graphql-ruby.org/queries/multiplex.html) the
 library GitLab uses on the backend.
diff --git a/doc/api/projects.md b/doc/api/projects.md
index 38c3708c7e5..c352b972b17 100644
--- a/doc/api/projects.md
+++ b/doc/api/projects.md
@@ -2023,7 +2023,7 @@ Read more in the [Project members](members.md) documentation.
 
 ## Start the pull mirroring process for a Project **(STARTER)**
 
-> Introduced in [GitLab Starter](https://about.gitlab.com/pricing) 10.3.
+> Introduced in [GitLab Starter](https://about.gitlab.com/pricing/) 10.3.
 
 ```
 POST /projects/:id/mirror/pull
diff --git a/doc/api/releases/index.md b/doc/api/releases/index.md
index a29769708bb..1ec1c200c35 100644
--- a/doc/api/releases/index.md
+++ b/doc/api/releases/index.md
@@ -300,18 +300,18 @@ Create a Release. You need push access to the repository to create a Release.
 POST /projects/:id/releases
 ```
 
-| Attribute          | Type            | Required | Description                                                                                                                      |
-| -------------------| --------------- | -------- | -------------------------------------------------------------------------------------------------------------------------------- |
-| `id`               | integer/string  | yes      | The ID or [URL-encoded path of the project](../README.md#namespaced-path-encoding).                                              |
-| `name`             | string          | yes      | The release name.                                                                                                                |
-| `tag_name`         | string          | yes      | The tag where the release will be created from.                                                                                  |
-| `description`      | string          | yes      | The description of the release. You can use [markdown](../../user/markdown.md).                                                  |
-| `ref`              | string          | no       | If `tag_name` doesn't exist, the release will be created from `ref`. It can be a commit SHA, another tag name, or a branch name. |
-| `milestones`       | array of string | no       | The title of each milestone the release is associated with.                                                                      |
-| `assets:links`     | array of hash   | no       | An array of assets links.                                                                                                        |
-| `assets:links:name`| string          | required by: `assets:links` | The name of the link.                                                                                         |
-| `assets:links:url` | string          | required by: `assets:links` | The url of the link.                                                                                          |
-| `released_at`      | datetime        | no       | The date when the release will be/was ready. Defaults to the current time. Expected in ISO 8601 format (`2019-03-15T08:00:00Z`). |
+| Attribute          | Type            | Required                    | Description                                                                                                                      |
+| -------------------| --------------- | --------                    | -------------------------------------------------------------------------------------------------------------------------------- |
+| `id`               | integer/string  | yes                         | The ID or [URL-encoded path of the project](../README.md#namespaced-path-encoding).                                              |
+| `name`             | string          | yes                         | The release name.                                                                                                                |
+| `tag_name`         | string          | yes                         | The tag where the release will be created from.                                                                                  |
+| `description`      | string          | yes                         | The description of the release. You can use [markdown](../../user/markdown.md).                                                  |
+| `ref`              | string          | yes, if `tag_name` doesn't exist | If `tag_name` doesn't exist, the release will be created from `ref`. It can be a commit SHA, another tag name, or a branch name. |
+| `milestones`       | array of string | no                          | The title of each milestone the release is associated with.                                                                      |
+| `assets:links`     | array of hash   | no                          | An array of assets links.                                                                                                        |
+| `assets:links:name`| string          | required by: `assets:links` | The name of the link.                                                                                                            |
+| `assets:links:url` | string          | required by: `assets:links` | The url of the link.                                                                                                             |
+| `released_at`      | datetime        | no                          | The date when the release will be/was ready. Defaults to the current time. Expected in ISO 8601 format (`2019-03-15T08:00:00Z`). |
 
 Example request:
 
diff --git a/doc/api/users.md b/doc/api/users.md
index 251c11198e1..1a1f45a259b 100644
--- a/doc/api/users.md
+++ b/doc/api/users.md
@@ -596,7 +596,7 @@ PUT /user/status
 
 | Attribute | Type   | Required | Description |
 | --------- | ------ | -------- | ----------- |
-| `emoji`   | string | no     | The name of the emoji to use as status, if omitted `speech_balloon` is used. Emoji name can be one of the specified names in the [Gemojione index][gemojione-index]. |
+| `emoji`   | string | no     | The name of the emoji to use as status, if omitted `speech_balloon` is used. Emoji name can be one of the specified names in the [Gemojione index](https://github.com/bonusly/gemojione/blob/master/config/index.json). |
 | `message` | string | no     | The message to set as a status. It can also contain emoji codes. |
 
 When both parameters `emoji` and `message` are empty, the status will be cleared.
@@ -1363,5 +1363,3 @@ Example response:
 ```
 
 Please note that `last_activity_at` is deprecated, please use `last_activity_on`.
-
-[gemojione-index]: https://github.com/jonathanwiesel/gemojione/blob/master/config/index.json
diff --git a/doc/development/migration_style_guide.md b/doc/development/migration_style_guide.md
index 46db00993a3..20d705136b2 100644
--- a/doc/development/migration_style_guide.md
+++ b/doc/development/migration_style_guide.md
@@ -286,6 +286,48 @@ For a small table (such as an empty one or one with less than `1,000` records),
 use `add_column` and `change_column_default` in a single-transaction migration,
 combining it with other operations that don't require `disable_ddl_transaction!`.
 
+## Changing the column default
+
+One might think that changing a default column with `change_column_default` is an
+expensive and disruptive operation for larger tables, but in reality it's not.
+
+Take the following migration as an example:
+
+```ruby
+class DefaultRequestAccessGroups < ActiveRecord::Migration[5.2]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  def up
+    change_column_default :namespaces, :request_access_enabled, true
+  end
+
+  def down
+    change_column_default :namespaces, :request_access_enabled, false
+  end
+end
+```
+
+Migration above changes the default column value of one of our largest
+tables: `namespaces`. This can be translated to:
+
+```sql
+ALTER TABLE namespaces
+ALTER COLUMN request_access_enabled
+DEFAULT false
+```
+
+In this particular case, the default value exists and we're just changing the metadata for
+`request_access_enabled` column, which does not imply a rewrite of all the existing records
+in the `namespaces` table. Only when creating a new column with a default, all the records are going be rewritten.
+
+NOTE: **Note:**  A faster [ALTER TABLE ADD COLUMN with a non-null default](https://www.depesz.com/2018/04/04/waiting-for-postgresql-11-fast-alter-table-add-column-with-a-non-null-default/)
+was introduced on PostgresSQL 11.0, removing the need of rewritting the table when a new column with a default value is added.
+
+For the reasons mentioned above, it's safe to use `change_column_default` in a single-transaction migration
+without requiring `disable_ddl_transaction!`.
+
 ## Updating an existing column
 
 To update an existing column to a particular value, you can use
diff --git a/doc/policy/maintenance.md b/doc/policy/maintenance.md
index d1ad9f2abe2..42e05dd9a5c 100644
--- a/doc/policy/maintenance.md
+++ b/doc/policy/maintenance.md
@@ -10,7 +10,7 @@ patch and security releases. New releases are usually announced on the [GitLab b
 ## Versioning
 
 GitLab uses [Semantic Versioning](https://semver.org/) for its releases:
-`(Major).(Minor).(Patch)` in a [pragmatic way](https://gist.github.com/jashkenas/cbd2b088e20279ae2c8e).
+`(Major).(Minor).(Patch)`.
 
 For example, for GitLab version 10.5.7:
 
diff --git a/doc/push_rules/push_rules.md b/doc/push_rules/push_rules.md
index b652319ef57..0771a3e4225 100644
--- a/doc/push_rules/push_rules.md
+++ b/doc/push_rules/push_rules.md
@@ -77,7 +77,7 @@ The following options are available.
 | Maximum file size | **Starter** 7.12 | Pushes that contain added or updated files that exceed this file size (in MB) are rejected. Set to 0 to allow files of any size. Files tracked by Git LFS are exempted. |
 
 TIP: **Tip:**
-GitLab uses [RE2 syntax](https://github.com/google/re2/wiki/Syntax) for regular expressions in push rules, and you can test them at the [GoLang regex tester](https://regex-golang.appspot.com).
+GitLab uses [RE2 syntax](https://github.com/google/re2/wiki/Syntax) for regular expressions in push rules, and you can test them at the [GoLang regex tester](https://regex-golang.appspot.com/assets/html/index.html).
 
 ## Prevent pushing secrets to the repository
 
diff --git a/doc/raketasks/backup_restore.md b/doc/raketasks/backup_restore.md
index 4a2afa5d5f9..fe9617c75ad 100644
--- a/doc/raketasks/backup_restore.md
+++ b/doc/raketasks/backup_restore.md
@@ -575,7 +575,7 @@ files. GitLab does not automatically prune old files stored in a third-party
 object storage (e.g., AWS S3) because the user may not have permission to list
 and delete files. We recommend that you configure the appropriate retention
 policy for your object storage. For example, you can configure [the S3 backup
-policy as described here](http://stackoverflow.com/questions/37553070/gitlab-omnibus-delete-backup-from-amazon-s3).
+policy as described here](https://stackoverflow.com/questions/37553070/gitlab-omnibus-delete-backup-from-amazon-s3).
 
 To schedule a cron job that backs up your repositories and GitLab metadata, use the root user:
 
@@ -859,7 +859,7 @@ Be advised that, backup is successfully restored in spite of these warnings.
 The rake task runs this as the `gitlab` user which does not have the superuser access to the database. When restore is initiated it will also run as `gitlab` user but it will also try to alter the objects it does not have access to.
 Those objects have no influence on the database backup/restore but they give this annoying warning.
 
-For more information see similar questions on PostgreSQL issue tracker[here](http://www.postgresql.org/message-id/201110220712.30886.adrian.klaver@gmail.com) and [here](http://www.postgresql.org/message-id/2039.1177339749@sss.pgh.pa.us) as well as [stack overflow](http://stackoverflow.com/questions/4368789/error-must-be-owner-of-language-plpgsql).
+For more information see similar questions on PostgreSQL issue tracker[here](https://www.postgresql.org/message-id/201110220712.30886.adrian.klaver@gmail.com) and [here](https://www.postgresql.org/message-id/2039.1177339749@sss.pgh.pa.us) as well as [stack overflow](https://stackoverflow.com/questions/4368789/error-must-be-owner-of-language-plpgsql).
 
 ### When the secrets file is lost
 
diff --git a/doc/raketasks/list_repos.md b/doc/raketasks/list_repos.md
index 476428eb4f5..cfcf11cf3c2 100644
--- a/doc/raketasks/list_repos.md
+++ b/doc/raketasks/list_repos.md
@@ -15,7 +15,7 @@ sudo -u git -H bundle exec rake gitlab:list_repos RAILS_ENV=production
 If you only want to list projects with recent activity you can pass
 a date with the 'SINCE' environment variable.  The time you specify
 is parsed by the Rails [TimeZone#parse
-function](http://api.rubyonrails.org/classes/ActiveSupport/TimeZone.html#method-i-parse).
+function](https://api.rubyonrails.org/classes/ActiveSupport/TimeZone.html#method-i-parse).
 
 ```
 # Omnibus
diff --git a/doc/ssh/README.md b/doc/ssh/README.md
index e18f49de3f0..aacc1e4edd3 100644
--- a/doc/ssh/README.md
+++ b/doc/ssh/README.md
@@ -84,7 +84,7 @@ stronger RSA key pair, specify the `-b` flag with a higher bit value than the
 default.
 
 The old, default password encoding for SSH private keys is
-[insecure](https://latacora.singles/2018/08/03/the-default-openssh.html);
+[insecure](https://latacora.micro.blog/the-default-openssh/);
 it's only a single round of an MD5 hash. Since OpenSSH version 6.5, you should
 use the `-o` option to `ssh-keygen` to encode your private key in a new, more
 secure format.
diff --git a/doc/user/permissions.md b/doc/user/permissions.md
index 771619b7a36..196f2afcfe3 100644
--- a/doc/user/permissions.md
+++ b/doc/user/permissions.md
@@ -54,7 +54,7 @@ The following table depicts the various user permission levels in a project.
 | View [Design Management](project/issues/design_management.md) pages **(PREMIUM)** | ✓ (*1*) | ✓          | ✓           | ✓        | ✓      |
 | View project code                                 | ✓ (*1*) | ✓          | ✓           | ✓        | ✓      |
 | Pull project code                                 | ✓ (*1*) | ✓          | ✓           | ✓        | ✓      |
-| View GitLab Pages protected by [access control](project/pages/introduction.md#gitlab-pages-access-control-core-only) | ✓       | ✓          | ✓           | ✓        | ✓      |
+| View GitLab Pages protected by [access control](project/pages/introduction.md#gitlab-pages-access-control-core) | ✓       | ✓          | ✓           | ✓        | ✓      |
 | View wiki pages                                   | ✓ (*1*) | ✓          | ✓           | ✓        | ✓      |
 | See a list of jobs                                | ✓ (*3*) | ✓          | ✓           | ✓        | ✓      |
 | See a job log                                     | ✓ (*3*) | ✓          | ✓           | ✓        | ✓      |
diff --git a/doc/user/project/merge_requests/code_quality.md b/doc/user/project/merge_requests/code_quality.md
index 3c667755787..92681e741de 100644
--- a/doc/user/project/merge_requests/code_quality.md
+++ b/doc/user/project/merge_requests/code_quality.md
@@ -66,6 +66,13 @@ will scan your source code for code quality issues. The report will be saved as
 that you can later download and analyze. Due to implementation limitations we always
 take the latest Code Quality artifact available.
 
+The included `code_quality` job is running in the `test` stage, so it needs to be included in your CI config, like so:
+
+```yaml
+stages:
+  - test
+```
+
 TIP: **Tip:**
 This information will be automatically extracted and shown right in the merge request widget.
 
diff --git a/doc/user/project/pages/introduction.md b/doc/user/project/pages/introduction.md
index e197d7c588f..1147fa16333 100644
--- a/doc/user/project/pages/introduction.md
+++ b/doc/user/project/pages/introduction.md
@@ -67,7 +67,7 @@ Some static site generators provide plugins for that functionality so that you
 don't have to create and edit HTML files manually. For example, Jekyll has the
 [redirect-from plugin](https://github.com/jekyll/jekyll-redirect-from).
 
-## GitLab Pages Access Control **(CORE ONLY)**
+## GitLab Pages Access Control **(CORE)**
 
 > [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/issues/33422) in GitLab 11.5.