Add recommendation for premium v3 App Service plans

Author: anaharris-ms

articles/reliability/reliability-app-service.md

@@ -26,6 +26,7 @@ When you deploy Azure App Service, you can create multiple instances of an *App
 For production deployments, you should:
 
 ::: zone pivot="free-shared-basic"
+
 - Use premium v3 App Service plans.
 - [Enable zone redundancy](#availability-zone-support), which requires your App Service plan to use a minimum of three instances.