Notificationhubs autorest.md required link update (Azure#48791)

Author: mcgallan

sdk/notificationhubs/Azure.ResourceManager.NotificationHubs/src/autorest.md

@@ -8,7 +8,7 @@ azure-arm: true
 csharp: true
 library-name: NotificationHubs
 namespace: Azure.ResourceManager.NotificationHubs
-require: https://github.com/Azure/azure-rest-api-specs/blob/a03dfac64acc53a8b84501a10099f95885b1b496/specification/notificationhubs/resource-manager/readme.md
+require: https://github.com/Azure/azure-rest-api-specs/blob/87643ba491d34656ed9d08ddce7544d033c349eb/specification/notificationhubs/resource-manager/readme.md
 #package-preview-2023-10
 output-folder: $(this-folder)/Generated
 clear-output-folder: true