3.13.0-43.72) is not available, but a newer one is (3.13.0-166.216). We redirected you there.
/usr/share/geneweb/doc is in gwsetup 6.05.1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/geneweb/../doc/geneweb