[Migrage] Error message update (#28299)

Co-authored-by: singhabh27 <[email protected]>

Author: YanaXu

src/Migrate/Migrate.Autorest/custom/New-AzMigrateServerReplication.ps1

@@ -721,7 +721,7 @@ public static int hashForArtifact(String artifact)
             }
 
             if (-not $HasTargetAVZone -and $disk.DiskType -eq "PremiumV2_LRS") {
-                throw "Premium SSD V2 disk can only be attached to zonal VMs."
+                throw "The Availability zone has not been provided for the Premium SSD V2 disk."
             }
 
             $res = $uniqueDiskUuids.Add($disk.DiskId)

src/Migrate/Migrate.Autorest/generate-info.json

@@ -1,3 +1,3 @@
 {
-  "generate_Id": "d4fe748d-7894-48d5-b634-38de021616c3"
+  "generate_Id": "4e55833b-f8ae-4cf1-9514-f2c589c80cae"
 }