Update index.yml

@czeumault Hi, this article was flagged with a broken link.  Please let me know if there are any issues.

Author: Matthew Sebolt

articles/cdn/index.yml

@@ -73,8 +73,8 @@ sections:
     className: cardsD
     items:
     - title: Command-Line
-      html: <p><a href="/powershell/resourcemanager/azurerm.cdn/v2.3.0/azurerm.cdn">PowerShell</a></p>
+      html: <p><a href="/powershell/module/azurerm.cdn">PowerShell</a></p>
     - title: Languages
       html: <p><a href="/dotnet/api/microsoft.azure.management.cdn">.NET</a></p><p><a href="/java/api/com.microsoft.azure.management.cdn">Java</a></p>
     - title: REST
-      html: <p><a href="/rest/api/cdn/">REST API reference</a></p>
+      html: <p><a href="/rest/api/cdn/">REST API reference</a></p>