Update README.md

I am adding a note that another common way developers "switch" branches is by using the `git checkout` command. This is in tandem with updating the English version of the quiz answers.

1-getting-started-lessons/2-github-basics/README.md

@@ -219,6 +219,7 @@ Let's go through a contributor workflow. Assume the contributor has already _for
    ```bash
    git switch [branch-name]
    ```
+   Another common way to switch branches is using the command `git checkout [branch-name]`.
 
 1. **Do work**. At this point you want to add your changes. Don't forget to tell Git about it with the following commands: