Improve get_cursor_shape() documentation

doc/classes/Control.xml

@@ -385,7 +385,7 @@
 			<return type="int" enum="Control.CursorShape" />
 			<param index="0" name="position" type="Vector2" default="Vector2(0, 0)" />
 			<description>
-				Returns the mouse cursor shape the control displays on mouse hover. See [enum CursorShape].
+				Returns the mouse cursor shape for this control when hovered over [param position] in local coordinates. For most controls, this is the same as [member mouse_default_cursor_shape], but some built-in controls implement more complex logic. See [enum CursorShape].
 			</description>
 		</method>
 		<method name="get_end" qualifiers="const">