treewide: update homepages to https where available

Based on "problems" from repology:

https://repology.org/repository/nix_unstable/problems

Mostly simple changes to reflect redirects.

pkgs/misc/emulators/kega-fusion/default.nix

@@ -70,7 +70,7 @@ in stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Sega SG1000, SC3000, SF7000, Master System, Game Gear, Genesis/Megadrive, SVP, Pico, SegaCD/MegaCD and 32X emulator";
-    homepage = http://www.carpeludum.com/kega-fusion/;
+    homepage = https://www.carpeludum.com/kega-fusion/;
     maintainers = with maintainers; [ abbradar ];
     license = licenses.unfreeRedistributable;
     platforms = [ "i686-linux" ];

pkgs/misc/emulators/mess/default.nix

@@ -18,7 +18,7 @@ let
 
 in
 
-stdenv.mkDerivation { 
+stdenv.mkDerivation {
   name = "mess-0.${version}";
 
   unpackPhase =
@@ -37,11 +37,11 @@ stdenv.mkDerivation {
   installPhase =
     ''
       mkdir -p $out/bin
-      cp mess* $out/bin/mess 
+      cp mess* $out/bin/mess
     '';
 
   meta = {
-    homepage = http://www.mess.org/;
+    homepage = https://www.mess.org/;
     license = "non-commercial";
     description = "Multi Emulator Super System, an emulator of many game consoles and computer systems";
     broken = true;