fix 4x4 not craftable

craft.lua

@@ -70,13 +70,21 @@ minetest.register_craft({
 })
 
 minetest.register_craft({
-	output = "paintings_lib:4x4_blank2x2",
+	output = "paintings_lib:4x4_blank4x4",
 	recipe = {
 		{"paintings_lib:2x2_blank2x2", "paintings_lib:2x2_blank2x2"},
 		{"paintings_lib:2x2_blank2x2", "paintings_lib:2x2_blank2x2"},
 	}
 })
 
+minetest.register_craft({
+	output = "paintings_lib:4x4_blank4x4",
+	recipe = {
+		{"paintings_lib:4x2_blank4x2"},
+		{"paintings_lib:4x2_blank4x2"},
+	}
+})
+
 -- The Paintings
 
 -- 1x1