/usr/share/doc/libgnustep-dl2-0d/changelog.Debian.gz is in libgnustep-dl2-0d 0.12.0-13.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libgnustep-dl2-0d/../gnustep-dl2-postgresql-adaptor/changelog.Debian.gz