Update articles/application-gateway/application-gateway-covid-guidelines.md

Co-Authored-By: Vic <[email protected]>

Author: mscatyao

articles/application-gateway/application-gateway-covid-guidelines.md

@@ -15,7 +15,7 @@ This article describes a few suggested guidelines to help you set up your Applic
 
 The following suggestions help you set up Application Gateway with WAF to handle extra traffic . 
 
-## Use the v2 SKUs over v1 for their autoscaling capabilities and performance benefits
+## Use the v2 SKU over v1 for its autoscaling capabilities and performance benefits
 The v2 SKUs offer autoscaling to ensure that your Application Gateway can scale up as traffic increases and offers other significant performance benefits such as 5x better SSL offload performance, quicker deployment and update times, zone redundancy, and more when compared to v1. For more information, see our [v2 documentation](https://docs.microsoft.com/azure/application-gateway/application-gateway-autoscaling-zone-redundant). 
 
 ## Set maximum instance count to the maximum possible (125)