/usr/share/man/man8/systemd-udevd-kernel.socket.8.gz is in udev 204-5ubuntu20.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man8/systemd-udevd.service.8.gz
/usr/share/man/man8/systemd-udevd.service.8.gz