The page at http://fedoraproject.org/sponsors.html is now at https://getfedora.org/sponsors, but there are still incoming links to the former, which now just redirects to top-level getfedora. Can we add a specific redirect?
We have a redirect in place for http://fedoraproject.org/sponsors but not for http://fedoraproject.org/sponsors.html.
Weird that external links use this .html extension, but if there are a lot we can obviously add this too. Sponsors indeed is a rather important page.
So this is finally working.