The footer for the devel list is:
{{{ devel mailing list devel@lists.fedoraproject.org http://lists.fedoraproject.org/admin/lists/devel@lists.fedoraproject.org }}}
But it should use {{{ devel mailing list devel@lists.fedoraproject.org https://lists.fedoraproject.org/admin/lists/devel@lists.fedoraproject.org }}}
I did not find {{{http://lists.fedoraproject.org}}} in ansible, therefore I guess it is a setting that needs to be changed manually in the mailman interface.
It was set in the database, I just fixed it in prod, thanks for reporting.
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