format update, additional destroy function in docs

week5/README.md

@@ -72,6 +72,16 @@ func _on_trigger_fired(effect: Variant, body: Variant) -> void:
 
 Now if something hits the "destroy" trigger, the game controller checks to see if it is a crate, and if so signals to destroy it. This is heard by the scene manager, who deletes the crate.
 
+In `Scenemanager`:
+
+```
+func destroy(body):
+	if body is Crate:
+		body.queue_free()
+```
+
+Optionally, the `Scenemanager`could now count up the number of remaining crates, and tell the `Gamecontroller` how many there are.
+
 ### Example: Loading Scenes
 
 Lets move the option to load scenes to the scene manager as well, and trigger it using a custom signal from the game controller.