Line 10: add regions metadata

Author: ttorble

articles/site-recovery/azure-to-azure-how-to-enable-zone-to-zone-disaster-recovery.md

@@ -7,6 +7,7 @@ ms.service: site-recovery
 ms.topic: article
 ms.date: 03/23/2022
 ms.author: v-pgaddala
+ms.custom: references_regions
 ---
 
 # Enable Azure VM disaster recovery between availability zones
@@ -116,4 +117,4 @@ To perform a Disaster Recovery drill, please follow the steps outlined [here](./
 
 To perform a failover and reprotect VMs in the secondary zone, follow the steps outlined [here](./azure-to-azure-tutorial-failover-failback.md).
 
-To failback to the primary zone, follow the steps outlined [here](./azure-to-azure-tutorial-failback.md).
+To failback to the primary zone, follow the steps outlined [here](./azure-to-azure-tutorial-failback.md).