AFAIK OTP releases are the recomended way of installing, but
* People seem unaware of that and use from source installations because they use the guide with the name of their distro
* People don't know what OTP releases are or what it means
I added a warning on all installation-from-source guides and added the same explanation on the two OTP pages (the miigration to OTP and installing OTP)
Backport of: https://git.pleroma.social/pleroma/pleroma/-/merge_requests/3485
