added comments to excluded packages

modules/nixos-modules/desktop.nix

@@ -18,17 +18,16 @@
         epiphany # web browser
         geary # email reader
         gedit # text editor
-        gnome-characters
-        gnome-music
-        gnome-photos
-        gnome-tour
-        gnome-logs
-        gnome-maps
+        gnome-characters # character set viewer
+        gnome-music # music player
+        gnome-photos # photo viewer
+        gnome-logs # log viwer
+        gnome-maps # map viewer
+        gnome-tour # welcome tour
         hitori # sudoku game
         iagno # go game
         tali # poker game
         yelp # help viewer
-        gnome-tour # welcome tour
       ];
       services = {
         # Enable CUPS to print documents.