[docs] Improve OS documentation on Using the Moodle App in a browser page

[crazyserver]

What is the URL of the page?

docs/guides/moodleapp/app-in-browser

What is the issue with this page?

Help wanted!

Use app in browser documentation has only been tested on Linux. If you are using a different operative system tell us here how it went to improve the docs.

Are you able to provide a patch for this?

No response