Fix incorrect reference to VisibleOnScreenEnabler2D/3D in *Notifier2D…

…/3D docs

doc/classes/VisibleOnScreenNotifier2D.xml

@@ -4,7 +4,7 @@
 		A rectangular region of 2D space that detects whether it is visible on screen.
 	</brief_description>
 	<description>
-		[VisibleOnScreenEnabler2D] represents a rectangular region of 2D space. When any part of this region becomes visible on screen or in a viewport, it will emit a [signal screen_entered] signal, and likewise it will emit a [signal screen_exited] signal when no part of it remains visible.
+		[VisibleOnScreenNotifier2D] represents a rectangular region of 2D space. When any part of this region becomes visible on screen or in a viewport, it will emit a [signal screen_entered] signal, and likewise it will emit a [signal screen_exited] signal when no part of it remains visible.
 		If you want a node to be enabled automatically when this region is visible on screen, use [VisibleOnScreenEnabler2D].
 		[b]Note:[/b] [VisibleOnScreenNotifier2D] uses the render culling code to determine whether it's visible on screen, so it won't function unless [member CanvasItem.visible] is set to [code]true[/code].
 	</description>

doc/classes/VisibleOnScreenNotifier3D.xml

@@ -4,7 +4,7 @@
 		A box-shaped region of 3D space that detects whether it is visible on screen.
 	</brief_description>
 	<description>
-		[VisibleOnScreenEnabler3D] represents a box-shaped region of 3D space. When any part of this region becomes visible on screen or in a [Camera3D]'s view, it will emit a [signal screen_entered] signal, and likewise it will emit a [signal screen_exited] signal when no part of it remains visible.
+		[VisibleOnScreenNotifier3D] represents a box-shaped region of 3D space. When any part of this region becomes visible on screen or in a [Camera3D]'s view, it will emit a [signal screen_entered] signal, and likewise it will emit a [signal screen_exited] signal when no part of it remains visible.
 		If you want a node to be enabled automatically when this region is visible on screen, use [VisibleOnScreenEnabler3D].
 		[b]Note:[/b] [VisibleOnScreenNotifier3D] uses an approximate heuristic that doesn't take walls and other occlusion into account, unless occlusion culling is used. It also won't function unless [member Node3D.visible] is set to [code]true[/code].
 	</description>