Add a link to some Git GUI clients.

30.about/10.contributing/page.en.md

@@ -69,10 +69,15 @@ You only need a modern browser to [use the WebIDE](https://m3p2.ljbac.com/-/ide/
 Setting up a Git client can be intimidating, but it allows offline edition of the courses.
 You can use your favorite text editor.
 
+Here are some [Git GUI clients](https://git-scm.com/downloads/guis), if the CLI feels too hard.
+
+> Note that during the alpha we're using port `10022` for ssh.
+
+
 #### Via Local Website
 
 This third level of edition is for experts who can [run the website locally](https://m3p2.ljbac.com/m3p2/grav-website#run-locally-for-fast-development)
-to instantly preview their changes, and use Grav's admin tools for page edition.
+to instantly preview their changes, and use the powerful Grav's admin tools for page edition.
 
 
 ## Enhanced Markdown