Man pages matching name locale.conf in section 5:

locale.conf.5.de	debian 10 / manpages-de
locale.conf.5.zh_CN	debian 10 / manpages-zh
locale.conf.5.zh_TW	debian 10 / manpages-zh
locale.conf.5.en	debian 10 / systemd
locale.conf.5.de	debian 11 / manpages-de
locale.conf.5.zh_CN	debian 11 / manpages-zh
locale.conf.5.zh_TW	debian 11 / manpages-zh
locale.conf.5.en	debian 11 / systemd
locale.conf.5.de	debian 12 / manpages-de
locale.conf.5.zh_CN	debian 12 / manpages-zh
locale.conf.5.zh_TW	debian 12 / manpages-zh
locale.conf.5.en	debian 12 / systemd