Man pages matching name sd-login in section 3:

sd-login.3.en	debian 10 / libelogind-dev-doc
sd-login.3.en	debian 10 / libsystemd-dev
sd-login.3.en	debian 11 / libelogind-dev-doc
sd-login.3.en	debian 11 / libsystemd-dev
sd-login.3.en	debian 12 / libelogind-dev-doc
sd-login.3.en	debian 12 / libsystemd-dev