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/window-managers/trayer/default.nix

@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   makeFlags = [ "PREFIX=$(out)" ];
 
   meta = with stdenv.lib; {
-    homepage = http://github.com/sargon/trayer-srg;
+    homepage = https://github.com/sargon/trayer-srg;
     license = licenses.mit;
     description = "A lightweight GTK2-based systray for UNIX desktop";
     platforms = platforms.linux;