Treewide: update some problematic homepages

These URLs are reported as problematic by Repology.
It could be a permanent redirection
or the page does not exist anymore

pkgs/development/python-modules/limnoria/default.nix

@@ -22,7 +22,7 @@ buildPythonPackage rec {
 
   meta = with stdenv.lib; {
     description = "A modified version of Supybot, an IRC bot";
-    homepage = http://supybot.fr.cr;
+    homepage = "https://github.com/ProgVal/Limnoria";
     license = licenses.bsd3;
     maintainers = with maintainers; [ goibhniu ];
   };