/usr/share/doc/libglobalhotkeys-ruby1.8/changelog.Debian.gz is in libglobalhotkeys-ruby1.8 0.3.2-3build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libglobalhotkeys-ruby1.8/../ruby-globalhotkeys/changelog.Debian.gz