Update index.yml

Author: rajats22

articles/backup/index.yml

@@ -73,7 +73,7 @@ landingContent:
             url: backup-azure-mysql-flexible-server-about.md
           - text: Cross Region Restore for Azure PostgreSQL Database
             url: backup-vault-overview.md#cross-region-restore-support-for-postgresql-using-azure-backup
-          - text: Vaulted backup and Cross Region Restore for support for AKS (preview)
+          - text: Vaulted backup and Cross Region Restore for support for AKS
             url: azure-kubernetes-service-backup-overview.md          
 
   # Card