Further changes to Tag JSON block

Author: andrewbrownmsft

articles/iot-hub-device-update/create-update-group.md

@@ -49,7 +49,7 @@ An Azure CLI environment:
 
 To create a device group, the first step is to add a tag to the target set of devices in IoT Hub. Tags can only be successfully added to your device after it has been connected to Device Update.
 
-Device Update tags use the following format:
+Device Update tags use the format in the following example:
 
 ```json
 "etag": "",