Fix get_v_scroll() desctiption in ItemList

(cherry picked from commit f97ab4a0e463de62f5b663764c5c82a3f96f2d65)

doc/classes/ItemList.xml

@@ -121,7 +121,7 @@
 		<method name="get_v_scroll">
 			<return type="VScrollBar" />
 			<description>
-				Returns the [Object] ID associated with the list.
+				Returns the vertical scrollbar.
 				[b]Warning:[/b] This is a required internal node, removing and freeing it may cause a crash. If you wish to hide it or any of its children, use their [member CanvasItem.visible] property.
 			</description>
 		</method>