[mobs/shark] Update

- Fix #290

mods/mobs/shark.lua

@@ -28,6 +28,7 @@ mobs:register_mob("mobs:shark_lg", {
 	type = "monster",
 	attack_type = "dogfight",
 	damage = 6,
+	reach = 3,
 	hp_min = 20,
 	hp_max = 30,
 	armor = 150,
@@ -71,6 +72,7 @@ mobs:register_mob("mobs:shark_md", {
 	type = "monster",
 	attack_type = "dogfight",
 	damage = 5,
+	reach = 2,
 	hp_min = 20,
 	hp_max = 25,
 	armor = 125,