[1.8.x] Improved link to the supported versions section of the download page.
[1.8.x] Improved link to the supported versions section of the download page.

Backport of c3b66dafdd473227065420bfc2d8d6819fe713ad from master

h4r5h1t/django-hauthy,h4r5h1t/django-hauthy,h4r5h1t/django-hauthy,h4r5h1t/django-hauthy