Update 05.spawning_mobs.rst (typo regarding 'respectively')

The order of mentioned nodes (SpawnPath and SpawnLocation) does not match the previous sentence when using "respectively". The following image confirms the order may be backwards.

getting_started/first_3d_game/05.spawning_mobs.rst

@@ -145,8 +145,8 @@ Your path should look like this.
 |image18|
 
 To sample random positions on it, we need a :ref:`PathFollow3D <class_PathFollow3D>` node. Add a
-:ref:`PathFollow3D <class_PathFollow3D>` as a child of the ``Path3D``. Rename the two nodes to ``SpawnPath`` and
-``SpawnLocation``, respectively. It's more descriptive of what we'll use them for.
+:ref:`PathFollow3D <class_PathFollow3D>` as a child of the ``Path3D``. Rename the two nodes to ``SpawnLocation`` and
+``SpawnPath``, respectively. It's more descriptive of what we'll use them for.
 
 |image19|