Improve LinearMovement description

Author: 4ian

extensions/reviewed/LinearMovement.json

@@ -13,7 +13,7 @@
   "description": [
     "Move objects on a straight line or according to their angle.",
     "",
-    "It can be used for simple enemies or bullets."
+    "It can be used for simple enemies or bullets. It's usually not adapted for players (other behaviors are a better choice) or bullets fired with the actions provided by the \"Fire Bullet\" behavior (these bullets are already moved using a force)."
   ],
   "origin": {
     "identifier": "LinearMovement",
@@ -165,4 +165,4 @@
     }
   ],
   "eventsBasedObjects": []
-}
+}