Update azure-pipelines.yml for Azure Pipelines

Author: yangpanMS

.pipelines/azure-pipelines.yml

@@ -40,12 +40,12 @@ steps:
     performMultiLevelLookup: true
     workingDirectory: '$(Build.SourcesDirectory)'
 
-- script: |
+- powershell: |
     # Read the content of VERSION
     $version=Get-Content $(Build.SourcesDirectory)\VERSION
 
     # Set the file content as a pipeline variable
-    echo "##vso[task.setvariable variable=VcVersion;isOutput=true]$version"
+    Write-Host "##vso[task.setvariable variable=VcVersion;isOutput=true]$version"
   displayName: 'Set VC Version'
 
   # Ensure the artifact output/bin/obj directories are clean.