Fixed copy&paste error #28117

Changed "left to right" in VSplitContainer to "top to bottom".

(cherry picked from commit aa8b2f444801f1dccbceaab797d6aa9e0dc9af90)

doc/classes/VSplitContainer.xml

@@ -4,7 +4,7 @@
 		Vertical split container.
 	</brief_description>
 	<description>
-		Vertical split container. See [SplitContainer]. This goes from left to right.
+		Vertical split container. See [SplitContainer]. This goes from top to bottom.
 	</description>
 	<tutorials>
 	</tutorials>