Responding to review feedback

Using `master` instead of commit id.

Author: marstr

articles/notification-hubs/notification-hubs-android-push-notification-google-fcm-get-started.md

@@ -27,7 +27,7 @@ ms.lastreviewed: 09/11/2019
 
 This tutorial shows you how to use Azure Notification Hubs and Firebase Cloud Messaging (FCM) to push notifications to an Android application. In this tutorial, you create a blank Android app that receives push notifications by using Firebase Cloud Messaging (FCM).
 
-The completed code for this tutorial can be downloaded [from GitHub](https://github.com/Azure/azure-notificationhubs-android/tree/55521d5b8ebecceaf05bd62958d08f14182ff08b/FCMTutorialApp).
+The completed code for this tutorial can be downloaded [from GitHub](https://github.com/Azure/azure-notificationhubs-android/tree/master/FCMTutorialApp).
 
 In this tutorial, you take the following steps: