Man pages matching name su in section 1:

su.1.de	debian 10 / manpages-de
su.1.en	debian 10 / util-linux
su.1.de	debian 11 / manpages-de
su.1.en	debian 11 / util-linux
su.1.de	debian 12 / manpages-de
su.1.fr	debian 12 / manpages-fr
su.1.tr	debian 12 / manpages-tr
su.1.uk	debian 12 / manpages-uk
su.1.en	debian 12 / util-linux