Page about bookmarks is confusing

The page about exporting your bookmarks is pretty confusing: https://support.torproject.org/tbb/export-and-import-bookmarks/

One thing it does is to mix instructions for different operating systems without warning.

It would be better to have different sections for Mac, Linux, Android, Windows

thanks translator @eulalio for the comment at https://hosted.weblate.org/translate/tor/support-portal/es/?checksum=3dc5a0cd207d143b