/usr/share/doc/libxkbcommon-x11-0/changelog.Debian.gz is in libxkbcommon-x11-0 0.4.1-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libxkbcommon-x11-0/../libxkbcommon0/changelog.Debian.gz