/usr/share/doc/libotr2-bin/changelog.Debian.gz is in libotr2-bin 3.2.0-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libotr2-bin/../libotr2/changelog.Debian.gz
/usr/share/doc/libotr2-bin/../libotr2/changelog.Debian.gz