Remove the defunct 6.5.0 release from the convenient top list of releases
and pointers, to discourage its use. It's still listed on the total list
of releases of course.

Hi Varnish team. We are a company that provide access to real time digital data services and we have been developing and supporting fast and accurate device detection technologies with integrations across different platforms and languages. We have been supporting our Device Detection engine with Varnish for a while and we would like our module to be listed in the VMODs list please. Kind Regards.

The existing link points to https://github.com/varnish/varnish-modules/blob/master/docs/cookie.rst
and the working link is https://github.com/varnish/varnish-modules/blob/master/docs/vmod_cookie.rst.