[Reviewed] [Advanced jump] Add an example link (#729)

* Don't show in changelog

Author: D8H

extensions/reviewed/AdvancedJump.json

@@ -15,7 +15,9 @@
     "* The wall jump behavior lets platformer characters jump and slide against walls.",
     "* The coyote time behavior, also known as \"ledge tolerance\", lets players to jump even after their character is no longer touching the ground for a given amount of time. It aims to give players a feeling of control and reduce frustration.",
     "* The horizontal dash behavior makes platformer characters dash horizontally.",
-    "* The dive dash behavior makes platformer characters dash toward the floor."
+    "* The dive dash behavior makes platformer characters dash toward the floor.",
+    "",
+    "An example allows to check it out ([open the project online](https://editor.gdevelop.io/?project=example://platformer-moves))."
   ],
   "origin": {
     "identifier": "AdvancedJump",