/usr/share/doc/libvorbis-dev/changelog.Debian.gz is in libvorbis-dev 1.3.5-4.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libvorbis-dev/../libvorbis0a/changelog.Debian.gz
/usr/share/doc/libvorbis-dev/../libvorbis0a/changelog.Debian.gz