/usr/share/doc/librdkit-dev/changelog.Debian.gz is in librdkit-dev 201603.5+dfsg-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/librdkit-dev/../librdkit1/changelog.Debian.gz
/usr/share/doc/librdkit-dev/../librdkit1/changelog.Debian.gz