/usr/share/man/man8/update-initramfs.8.gz is in live-tools 3.0.20-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man8/live-update-initramfs.8.gz
/usr/share/man/man8/live-update-initramfs.8.gz