Update contributing.md Github docs URL

CONTRIBUTING.md

@@ -17,7 +17,7 @@ Setup guides, [FAQ](https://wiki.servarr.com/Sonarr_FAQ), the more information w
 ### Getting started ###
 
 1. Fork Sonarr
-2. Clone the repository into your development machine. [*info*](https://help.github.com/articles/working-with-repositories)
+2. Clone the repository into your development machine. [*info*](https://docs.github.com/en/github/creating-cloning-and-archiving-repositories/cloning-a-repository-from-github)
 3. Install the required Node Packages `yarn install`
 4. Start gulp to monitor your dev environment for any changes that need post processing using `yarn start` command.
 5. Build the project in Visual Studio, Setting startup project to `Sonarr.Console` and framework to `x86`