Man pages matching name grub-mkconfig in section 8:

grub-mkconfig.8.en	debian 10 / grub-common
grub-mkconfig.8.en	debian 11 / grub-common
grub-mkconfig.8.de	debian 11 / manpages-de
grub-mkconfig.8.en	debian 12 / grub-common
grub-mkconfig.8.da	debian 12 / manpages-da
grub-mkconfig.8.de	debian 12 / manpages-de
grub-mkconfig.8.ja	debian 12 / manpages-ja
grub-mkconfig.8.nb	debian 12 / manpages-nb
grub-mkconfig.8.sr	debian 12 / manpages-sr
grub-mkconfig.8.sv	debian 12 / manpages-sv
grub-mkconfig.8.vi	debian 12 / manpages-vi