/usr/share/doc/libtf2-dev/changelog.Debian.gz is in libtf2-dev 0.5.16-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libtf2-dev/../libtf2-0d/changelog.Debian.gz
/usr/share/doc/libtf2-dev/../libtf2-0d/changelog.Debian.gz