Link to BootstrapCDN and fix its name. (#24987)

docs/4.0/getting-started/download.md

@@ -28,9 +28,9 @@ Should you require [build tools]({{ site.baseurl }}/docs/{{ site.docs_version }}
 
 <a href="{{ site.download.source }}" class="btn btn-bd-primary" onclick="ga('send', 'event', 'Getting started', 'Download', 'Download source');">Download source</a>
 
-## Bootstrap CDN
+## BootstrapCDN
 
-Skip the download with the Bootstrap CDN to deliver cached version of Bootstrap's compiled CSS and JS to your project.
+Skip the download with [BootstrapCDN](https://www.bootstrapcdn.com/) to deliver cached version of Bootstrap's compiled CSS and JS to your project.
 
 {% highlight html %}
 <link rel="stylesheet" href="{{ site.cdn.css }}" integrity="{{ site.cdn.css_hash }}" crossorigin="anonymous">

docs/4.0/getting-started/introduction.md

@@ -1,7 +1,7 @@
 ---
 layout: docs
 title: Introduction
-description: Get started with Bootstrap, the world's most popular framework for building responsive, mobile-first sites, with the Bootstrap CDN and a template starter page.
+description: Get started with Bootstrap, the world's most popular framework for building responsive, mobile-first sites, with BootstrapCDN and a template starter page.
 group: getting-started
 redirect_from:
   - /docs/
@@ -13,7 +13,7 @@ toc: true
 
 ## Quick start
 
-Looking to quickly add Bootstrap to your project? Use the Bootstrap CDN, provided for free by the folks at MaxCDN. Using a package manager or need to download the source files? [Head to the downloads page.]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/download/)
+Looking to quickly add Bootstrap to your project? Use BootstrapCDN, provided for free by the folks at MaxCDN. Using a package manager or need to download the source files? [Head to the downloads page.]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/download/)
 
 ### CSS
 

index.html

@@ -51,8 +51,8 @@ gem install bootstrap -v {{ site.current_ruby_version }}
   <div class="col-12 col-md-4 p-3 p-md-5 bg-light border border-white">
     <!-- Icon by Bytesize https://github.com/danklammer/bytesize-icons -->
     {% include icons/download.svg width="32" height="32" class="text-primary mb-2" %}
-    <h3>Bootstrap CDN</h3>
-    <p>When you only need to include Bootstrap's compiled CSS or JS, you can use the Bootstrap CDN.</p>
+    <h3>BootstrapCDN</h3>
+    <p>When you only need to include Bootstrap's compiled CSS or JS, you can use <a href="https://www.bootstrapcdn.com/">BootstrapCDN</a>.</p>
 
 <h5>CSS only</h5>
 {% highlight html %}