FYI, I do not know since when but the site is nowadays not only providing https but also auto-switching to https if you surf to it with a plain http:// url.
E.g. http://manpages.ubuntu.com/manpages/focal/en/man1/ua.1.html gets https://manpages.ubuntu.com/manpages/focal/en/man1/ua.1.html as you'd expect.
FYI, I do not know since when but the site is nowadays not only providing https but also auto-switching to https if you surf to it with a plain http:// url.
E.g. manpages. ubuntu. com/manpages/ focal/en/ man1/ua. 1.html /manpages. ubuntu. com/manpages/ focal/en/ man1/ua. 1.html
http://
gets
https:/
as you'd expect.