Clarify what Navlink does and does not do

(cherry picked from commit 2874b7980738722b30ffba4b8f49eb09f15c3fe2)

tutorials/navigation/navigation_using_navigationlinks.rst

@@ -44,13 +44,12 @@ If no valid polygon is found within the search radius the navigation link gets d
 The link debug visuals can be changed in the Editor :ref:`ProjectSettings<class_ProjectSettings>` under ``debug/shapes/navigation``.
 The visibility of the debug can also be controlled in the Editor 3D Viewport gizmo menu.
 
-.. note::
-
-    NavigationLinks do not move agents between the two link positions by themselves.
-
-A navigation link does not provide any automated movement through the link. Instead, when
-an agent reaches the position of a link, game code needs to react (e.g. through area triggers) and provide means for the agent
-to move through the link to end up at the links other position (e.g. through teleport or animation) to continue along the path.
+A navigation link does not provide any specialized movement through the link. Instead, when
+an agent reaches the position of a link, game code needs to react (e.g. through area triggers)
+and provide means for the agent to move through the link to end up at the links other position
+(e.g. through teleport or animation). Without that an agent will attempt to move itself along
+the path of the link. You could end up with an agent walking over a bottomless pit instead of
+waiting for a moving platform, or walking through a teleporter and proceeding through a wall.
 
 Navigation link script templates
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