docs - fixed snippets

docs/lua/snippets.md

@@ -11,7 +11,7 @@ end
 for i = 1, 7 do
 	for j = 1, 120 do
 		for k = 1, 7 do
-			this.world:createEntityEx {
+			Editor.createEntityEx {
 				position = { i  * 3, j * 3, k * 3 },
 				model_instance = { source = "models/shapes/cube.fbx" },
 				rigid_actor = { dynamic = 1, box_geometry = { {} } }