Made spacing consistent (#17623)

README.md

@@ -20,6 +20,7 @@ The [`vscode`](https://github.com/microsoft/vscode) repository is where we do de
 * Review the [documentation](https://github.com/microsoft/vscode-docs) and make pull requests for anything from typos to new content
 
 ## Contributing
+
 If you are interested in fixing issues and contributing directly to the code base,
 please see the document [How to Contribute](https://github.com/Microsoft/vscode/wiki/How-to-Contribute), which covers the following: