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/tools/misc/rename/default.nix

@@ -12,6 +12,7 @@ perlPackages.buildPerlPackage {
   };
   meta = with stdenv.lib; {
     description = "Rename files according to a Perl rewrite expression";
+    homepage = "https://github.com/pstray/rename";
     maintainers = with maintainers; [ mkg ];
     license = with licenses; [ gpl1Plus ];
   };