fix nodes have not footstep sound

mods/colouredstonebricks/init.lua

@@ -47,7 +47,7 @@ for number = 1, 15 do
 		description = colour.." Stone Brick",
 		tiles = {"colouredstonebricks_"..colour2..".png"},
 		groups = {cracky=3},
-        sounds = default.node_sound_defaults(),
+        sounds = default.node_sound_stone_defaults(),
 	})
 
 	minetest.register_craft({
@@ -64,7 +64,7 @@ for number = 1, 15 do
         description = colour.." Stone Brick",
 		tiles = {"colouredstonebricks_"..colour2..".png"},
 		groups = {cracky=3},
-		sounds = default.node_sound_defaults(),
+		sounds = default.node_sound_stone_defaults(),
         sunlight_propagates = true,
     })
 end