Update app-service-configure-premium-v4-tier.md

Author: msangapu-msft

articles/app-service/app-service-configure-premium-v4-tier.md

@@ -127,7 +127,7 @@ Premium V4 is available in the following regions:
 - West US 2
 - West US 3
 
-- <sup>*</sup> Region supports availability zones.
+- <sup>*</sup> Region supports Premium v4 with availability zones.
 
 ## Scale up from an unsupported resource group and region combination