/usr/share/help/gl/zenity/legal.xml is in zenity-common 3.28.1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/help/gl/zenity/../../../help-langpack/gl/zenity/legal.xml
/usr/share/help/gl/zenity/../../../help-langpack/gl/zenity/legal.xml