/usr/share/doc/system-config-printer-gnome/changelog.Debian.gz is in system-config-printer-gnome 1.3.8+20120201-0ubuntu8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/system-config-printer-gnome/../python-cupshelpers/changelog.Debian.gz