fixed WF POWER dirt surface

Author: stalechilibeans

levels/wf/areas/1/collision.inc.c

@@ -1195,7 +1195,7 @@ const Collision mountain_collision[] = {
 	COL_TRI(219, 19, 220),
 	COL_TRI(32, 31, 97),
 	COL_TRI(97, 31, 101),
-	COL_TRI_INIT(SURFACE_NOT_SLIPPERY, 23),
+	COL_TRI_INIT(SURFACE_HARD_NOT_SLIPPERY, 23),
 	COL_TRI(76, 218, 64),
 	COL_TRI(76, 86, 218),
 	COL_TRI(76, 64, 66),