Add rg parameter

Author: baanders

articles/digital-twins/tutorial-end-to-end.md

@@ -190,7 +190,7 @@ The first setting gives the function app the **Azure Digital Twins Data Owner**
 1. Use the **principalId** value in the following command to assign the function app's identity to the **Azure Digital Twins Data Owner** role for your Azure Digital Twins instance.
 
     ```azurecli-interactive	
-    az dt role-assignment create --dt-name <your-Azure-Digital-Twins-instance> --assignee "<principal-ID>" --role "Azure Digital Twins Data Owner"
+    az dt role-assignment create --resource-group <your-resource-group> --dt-name <your-Azure-Digital-Twins-instance> --assignee "<principal-ID>" --role "Azure Digital Twins Data Owner"
     ```
 
 The result of this command is outputted information about the role assignment you've created. The function app now has permissions to access data in your Azure Digital Twins instance.