/usr/share/doc/libfolks-dev/changelog.Debian.gz is in libfolks-dev 0.6.8-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libfolks-dev/../libfolks25/changelog.Debian.gz
/usr/share/doc/libfolks-dev/../libfolks25/changelog.Debian.gz