Restore the changes on NuGet.config

Author: Simon Zhao (BEYONDSOFT CONSULTING INC)

NuGet.config

@@ -35,6 +35,7 @@
     <!--  Begin: Package sources from dotnet-runtime -->
     <!--  End: Package sources from dotnet-runtime -->
     <!--  Begin: Package sources from dotnet-templating -->
+    <add key="darc-pub-dotnet-templating-f630f03" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-templating-f630f037/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-templating -->
     <!--  Begin: Package sources from dotnet-windowsdesktop -->
     <!--  End: Package sources from dotnet-windowsdesktop -->