Decreased the number of sticks given from group:wood

- In the craft inventory, putting, from now, an item from the group:wood won't give you 9 sticks anymore but 4. In fact, 4 sticks give you a wooden plank item, part of
  the group:wood, and this wooden plank gives you back 9 sticks, which could be used to craft again some wooden planks, etc...

minetestforfun_game/mods/default/crafting.lua

@@ -1,5 +1,6 @@
 -- mods/default/crafting.lua
 
+
 minetest.register_craft({
 	output = "default:wood 4",
 	recipe = {{"default:tree"},}
@@ -18,7 +19,7 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = "default:stick 9",
+	output = "default:stick 4",
 	recipe = {{"group:wood"},}
 })