/usr/share/doc/libnotify-cil-dev/changelog.Debian.gz is in libnotify-cil-dev 0.4.0~r3032-7build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libnotify-cil-dev/../libnotify0.4-cil/changelog.Debian.gz