update relative link

Author: v-geberr

articles/app-service/includes/tutorial-dotnet-storage-managed-identity/introduction.md

@@ -39,8 +39,8 @@ In this tutorial, you learn how to:
 ## Prerequisites
 
 * A web application running on Azure App Service:
-    * [.NET quickstart](../quickstart-dotnetcore.md)
-    * [JavaScript quickstart](../quickstart-nodejs.md)
+    * [.NET quickstart](../../quickstart-dotnetcore.md)
+    * [JavaScript quickstart](../../quickstart-nodejs.md)
 
 ## Enable managed identity on an app