/usr/share/doc/apertium/changelog.Debian.gz is in apertium 3.1.0-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/apertium/../libapertium3-3.1-0/changelog.Debian.gz
/usr/share/doc/apertium/../libapertium3-3.1-0/changelog.Debian.gz