Man pages matching name ntp.conf in section 5:

ntp.conf.5.en	debian 10 / ntp
ntp.conf.5.en	debian 10 / ntpsec
ntp.conf.5.en	debian 11 / ntp
ntp.conf.5.en	debian 11 / ntpsec
ntp.conf.5.en	debian 12 / ntpsec