/usr/share/man/man5/journal-remote.conf.d.5.gz is in systemd-journal-remote 229-4ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man5/journal-remote.conf.5.gz
/usr/share/man/man5/journal-remote.conf.5.gz