removed 'preview' from link

Author: FlorianBorn71

articles/remote-rendering/reference/toc.yml

@@ -11,4 +11,4 @@
 - name: Azure Mixed Reality Resource Management REST API
   href: https://docs.microsoft.com/rest/api/mixedreality/
 - name: C# API documentation
-  href: https://review.docs.microsoft.com/dotnet/api/Microsoft.Azure.RemoteRendering
+  href: https://docs.microsoft.com/dotnet/api/Microsoft.Azure.RemoteRendering