Update README.md

Author: glibnub

README.md

@@ -14,6 +14,6 @@ This is a minimal sample app that demonstrates how to run a Python Flask applica
 
 For more information, please see the [Python on App Service quickstart](https://docs.microsoft.com/azure/app-service/containers/quickstart-python).
 
-# Contributing
+## Contributing
 
 This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [[email protected]](mailto:[email protected]) with any additional questions or comments.