use git switch over checkout for branches

Author: RafaelCenzano

docs/CONTRIBUTING.md

@@ -16,7 +16,7 @@ If this is something you think you can fix, then fork `main` and create a branch
 A good branch name would be (where issue #123 is the ticket you're working on):
 
 ```sh
-git checkout -b 123-add-japanese-translations
+git switch -c 123-add-japanese-translations
 ```
 
 ### Working with open source projects
@@ -50,4 +50,4 @@ Follow normal guidelines for git commits, limiting the length and adding extra d
 
 For Pull Requests please include an issue number or details on what is changed in the pull request.
 
-Please comment code at least every 10 lines to explain what code does. Use more for more complicated sections of code.
+Please comment code at least every 10 lines to explain what code does. Use more for more complicated sections of code.