Scenes and Nodes: Update default Editor layout (#3191)

getting_started/step_by_step/scenes_and_nodes.rst

@@ -130,9 +130,8 @@ And finally, create the Label! A lot happens when Create is pressed:
 First of all, the scene changes to the 2D editor (because Label is a 2D Node
 type), and the Label appears, selected, at the top left corner of the viewport.
 
-The node appears in the scene tree editor (box in the top right
-corner), and the label properties appear in the Inspector (box in the
-bottom right corner).
+The node appears in the scene tree editor ("Scene" tab in the top-left panel),
+and the label properties appear in the Inspector (tab in the right-hand panel).
 
 The next step will be to change the "Text" Property of the label. Let's
 change it to "Hello World":