Document misc field_specials things

src/overworld.c

@@ -735,7 +735,7 @@ void SetLastHealLocationWarp(u8 healLocationId)
         SetWarpData(&gSaveBlock1Ptr->lastHealLocation, healLocation->group, healLocation->map, -1, healLocation->x, healLocation->y);
 }
 
-void sub_8084D5C(s16 x, s16 y)
+void UpdateEscapeWarp(s16 x, s16 y)
 {
     u8 currMapType = GetCurrentMapType();
     u8 destMapType = GetMapTypeByGroupAndId(sWarpDestination.mapGroup, sWarpDestination.mapNum);