Update _release-template.yml step names (microsoft#2058)

Clarify what each step is doing by fixing their names

Author: justinchuby

.azure-pipelines/_release-template.yml

@@ -8,14 +8,14 @@ steps:
   - script: python -m pip install --upgrade pip build wheel
     displayName: 'Install Python build dependencies'
   - script: python -m build
-    displayName: 'Build ONNX Script wheel dev version'
+    displayName: 'Build ONNX Script wheel'
   - task: CopyFiles@2
     displayName: 'Copy Python Wheel to: $(Build.ArtifactStagingDirectory)'
     inputs:
       SourceFolder: 'dist'
       Contents: '*.*'
       TargetFolder: '$(Build.ArtifactStagingDirectory)'
   - task: PublishBuildArtifacts@1
-    displayName: 'Publish onnxscript'
+    displayName: 'Save build artifacts'
     inputs:
       ArtifactName: onnxscript