use correct manual validation job

jobs/release/release.yml

@@ -44,9 +44,10 @@ extends:
                   Write-Host "##vso[build.updatebuildnumber]$newVersion - $str"
                 ignoreLASTEXITCODE: true
                 displayName: "Set the release name"
-              - task: ManualIntervention@8
-                displayName: "Manual Intervention"
+              - task: ManualValidation@0
+                displayName: "Manual Validation"
                 inputs:
+                  notifyUsers: makefilecrew@microsoft.com
                   instructions: |
                     Download and test the vsix from the latest release build: https://devdiv.visualstudio.com/DevDiv/_build?definitionId=18396