[ci skip] Update redirecting links in guides

guides/source/2_2_release_notes.md

@@ -34,7 +34,7 @@ Documentation
 The internal documentation of Rails, in the form of code comments, has been improved in numerous places. In addition, the [Ruby on Rails Guides](http://guides.rubyonrails.org/) project is the definitive source for information on major Rails components. In its first official release, the Guides page includes:
 
 * [Getting Started with Rails](getting_started.html)
-* [Rails Database Migrations](migrations.html)
+* [Rails Database Migrations](active_record_migrations.html)
 * [Active Record Associations](association_basics.html)
 * [Active Record Query Interface](active_record_querying.html)
 * [Layouts and Rendering in Rails](layouts_and_rendering.html)

guides/source/active_record_basics.md

@@ -104,7 +104,7 @@ depending on the purpose of these columns.
   your models.
 * **Primary keys** - By default, Active Record will use an integer column named
   `id` as the table's primary key. When using [Active Record
-  Migrations](migrations.html) to create your tables, this column will be
+  Migrations](active_record_migrations.html) to create your tables, this column will be
   automatically created.
 
 There are also some optional column names that will add additional features
@@ -374,4 +374,4 @@ and to roll it back, `rails db:rollback`.
 
 Note that the above code is database-agnostic: it will run in MySQL,
 PostgreSQL, Oracle and others. You can learn more about migrations in the
-[Active Record Migrations guide](migrations.html).
+[Active Record Migrations guide](active_record_migrations.html).

guides/source/getting_started.md

@@ -700,8 +700,8 @@ in case you want to reverse it later. When you run this migration it will create
 an `articles` table with one string column and a text column. It also creates
 two timestamp fields to allow Rails to track article creation and update times.
 
-TIP: For more information about migrations, refer to [Rails Database Migrations]
+TIP: For more information about migrations, refer to [Active Record Migrations]
-(migrations.html).
+(active_record_migrations.html).
 
 At this point, you can use a bin/rails command to run the migration:
 

guides/w3c_validator.rb

@@ -21,8 +21,8 @@
 #
 #     Separate many using commas:
 #
-#       # validates only association_basics.html and migrations.html
+#       # validates only association_basics.html and command_line.html
-#       rake guides:validate ONLY=assoc,migrations
+#       rake guides:validate ONLY=assoc,command
 #
 # ---------------------------------------------------------------------------