* docs: one Troubleshooting page, four tabs, and the start pages folded
* docs: keep how Studio app updates arrive on the help page
Folding the Studio app troubleshooting page into /help dropped its
"How updates arrive" section: the update button, Settings > Updates
and the Mac menu route, the Automatic updates toggle, and what to do
when an update stalls or cannot check. It is back word for word; every
label is still in the app.
Ular Kimsanov