/usr/share/doc/guile-gnome2-gnome/changelog.Debian.gz is in guile-gnome2-gnome 2.16.2-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/guile-gnome2-gnome/../guile-gnome2-glib/changelog.Debian.gz