Update README.md

Author: glibnub

README.md

@@ -13,6 +13,6 @@ description: "This sample demonstrates a tiny Hello World Node.js app for Azure
 
 This sample demonstrates a tiny Hello World node.js app for [App Service Web App](https://docs.microsoft.com/azure/app-service-web).
 
-# 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.