Let's rename also the suppressions with the new Identity object schema

Author: almat-msft

specification/desktopvirtualization/resource-manager/readme.md

@@ -50,7 +50,7 @@ suppressions:
     from: desktopvirtualization.json
     reason: False postive -> we have a singleton element in the collection, per recommendation from ARM API review, meaning that we won't have an "even" number of segments. Learn more about this (approved) scenario @  ARM RPC Guidance https://github.com/Azure/azure-resource-manager-rpc/blob/master/v1.0/common-api-contracts.md#singleton-resources
   - code: GuidUsage
-    where: $.definitions.Identity.properties.*.format
+    where: $.definitions.DesktopVirtualizationIdentity.properties.*.format
     from: desktopvirtualization.json
     reason: False postive -> this is the official Managed Identity payload format for principal and tenant ID properties and we are just (re)defining them
 ```