/usr/share/doc/libgnome-desktop-3-dev/changelog.Debian.gz is in libgnome-desktop-3-dev 3.28.1-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgnome-desktop-3-dev/../gir1.2-gnomedesktop-3.0/changelog.Debian.gz