clarify Waterway shinespark note

Author: blkerby

region/brinstar/pink/Waterway Energy Tank Room.json

@@ -309,7 +309,9 @@
       ],
       "clearsObstacles": ["A"],
       "flashSuitChecked": true,
-      "note": ["Enter with a small spin jump."]
+      "note": [
+        "If coming from a water environment, this assumes entering with a small spin jump."
+      ]
     },
     {
       "id": 14,