/usr/share/doc/libraul-dev/changelog.Debian.gz is in libraul-dev 0.8.0+dfsg0-0.1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libraul-dev/../libraul10v5/changelog.Debian.gz
/usr/share/doc/libraul-dev/../libraul10v5/changelog.Debian.gz