Update python-app.yml (#328)

.github/workflows/python-app.yml

@@ -1,5 +1,5 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
-# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
+# For more information see: https://docs.github.com/en/actions/use-cases-and-examples/building-and-testing/building-and-testing-python
 
 name: GCP Scanner linting and testing