Man pages matching name os-release in section 5:

os-release.5.de	debian 10 / manpages-de
os-release.5.zh_CN	debian 10 / manpages-zh
os-release.5.zh_TW	debian 10 / manpages-zh
os-release.5.en	debian 10 / systemd
os-release.5.de	debian 11 / manpages-de
os-release.5.zh_CN	debian 11 / manpages-zh
os-release.5.zh_TW	debian 11 / manpages-zh
os-release.5.en	debian 11 / systemd
os-release.5.de	debian 12 / manpages-de
os-release.5.zh_CN	debian 12 / manpages-zh
os-release.5.zh_TW	debian 12 / manpages-zh
os-release.5.en	debian 12 / systemd