Fix post-build test to pass 'help' (#176)

Author: zooba

.github/workflows/build.yml

@@ -130,7 +130,7 @@ jobs:
         gcm pythonw
 
     - name: 'Show help output'
-      run: pymanager
+      run: pymanager help
 
     - name: 'Install default runtime'
       run: pymanager install default

ci/release.yml

@@ -248,7 +248,7 @@ stages:
         displayName: 'Ensure global commands are present'
 
       - powershell: |
-          pymanager
+          pymanager help
         displayName: 'Show help output'
 
       - powershell: |