/usr/share/doc/libsbsms-dev/changelog.Debian.gz is in libsbsms-dev 2.0.0-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libsbsms-dev/../libsbsms10/changelog.Debian.gz
/usr/share/doc/libsbsms-dev/../libsbsms10/changelog.Debian.gz