/usr/share/doc/libstrophe-dev/changelog.Debian.gz is in libstrophe-dev 0.8.8-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libstrophe-dev/../libstrophe0/changelog.Debian.gz
/usr/share/doc/libstrophe-dev/../libstrophe0/changelog.Debian.gz