Merge pull request #4846 from golddotasksquestions/remove-a

Removing " a" (singular) in front of "ViewportContainers" (plural)

tutorials/scripting/change_scenes_manually.rst

@@ -130,7 +130,7 @@ a scene's data between scene changes (adding the scene to the root node).
 
         GetTree().GetRoot().AddChild(scene);
 
-Perhaps instead they wish to display multiple scenes at the same time using a
+Perhaps instead they wish to display multiple scenes at the same time using
 :ref:`ViewportContainers <class_ViewportContainer>`. This is optimal in
 cases where the intent is to render different content in different parts of the
 screen. Minimaps and split-screen multiplayer are good examples.