use https://github.com for all homepages

GitHub does a redirect to https:// when you use http://

repology complains with:

“Homepage link "https://github.com/…" is dead (HTTP error 404) for more than a month.”

This will fix some of them (not all though)

pkgs/applications/misc/milu/default.nix

@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Higher Order Mutation Testing Tool for C and C++ programs";
-    homepage = http://github.com/yuejia/Milu;
+    homepage = https://github.com/yuejia/Milu;
     license = stdenv.lib.licenses.bsd2;
     platforms = stdenv.lib.platforms.linux;
     maintainers = [ stdenv.lib.maintainers.vrthra ];