Learn Editor: Update notification-hubs-push-notification-registration-management.md

Author: Ankit-MSFT

articles/notification-hubs/notification-hubs-push-notification-registration-management.md

@@ -333,4 +333,4 @@ await hub.UpdateRegistrationAsync(r);
 await hub.DeleteRegistrationAsync(r);
 ```
 
-The backend must handle concurrency between registration updates. Service Bus offers optimistic concurrency control for registration management. At the HTTP level, this is implemented with the use of ETag on registration management operations. This feature is transparently used by Microsoft SDKs, which throw an exception if an update is rejected for concurrency reasons. The app backend is responsible for handling these exceptions and retrying the update if necessary.
+The backend must handle concurrency between registration updates. Notification Hubs offers optimistic concurrency control for registration management. At the HTTP level, this is implemented with the use of ETag on registration management operations. This feature is transparently used by Microsoft SDKs, which throw an exception if an update is rejected for concurrency reasons. The app backend is responsible for handling these exceptions and retrying the update if necessary.