Merge pull request #295067 from wmgries/rev-pv2-regions

Add westus and eastus for Azure Files HDD Pv2 support

Author: prmerger-automator[bot]

articles/storage/files/understanding-billing.md

@@ -129,6 +129,8 @@ Currently, these SKUs are generally available in a limited subset of regions:
 - Brazil Southeast
 - South Central US
 - North Central US
+- West US
+- East US
 
 ### Provisioned v2 provisioning detail
 When you create a provisioned v2 file share, you specify the provisioned capacity for the file share in terms of storage, IOPS, and throughput. File shares are limited based on the following attributes: