/usr/share/doc/libmimedir-gnome-dev/changelog.Debian.gz is in libmimedir-gnome-dev 0.4.2-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libmimedir-gnome-dev/../libmimedir-gnome0.4/changelog.Debian.gz