lint

Author: BillWagner

docs/csharp/tour-of-csharp/tutorials/list-collection.md

@@ -28,7 +28,6 @@ You must have one of the following:
   - [Visual Studio Code](https://code.visualstudio.com/download).
   - The [C# DevKit](https://marketplace.visualstudio.com/items?itemName=ms-dotnettools.csdevkit).
 
-
 ## A basic list example
 
 To start a GitHub Codespace with the tutorial environment, open a browser window to the [tutorial codespace](https://github.com/dotnet/tutorial-codespace) repository. Select the green *Code* button, and the *Codespaces* tab. Then select the `+` sign to create a new Codespace using this environment. If you completed other tutorials in this series, you can open that codespace instead of creating a new one.