/usr/share/doc/libstoken-dev/changelog.Debian.gz is in libstoken-dev 0.92-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libstoken-dev/../libstoken1/changelog.Debian.gz
/usr/share/doc/libstoken-dev/../libstoken1/changelog.Debian.gz