Fix incorrect entity ID for iron golem. Addresses BUKKIT-1088

By: Celtic Minstrel <celtic.minstrel.ca@some.place>

paper-api/src/main/java/org/bukkit/entity/EntityType.java

@@ -45,7 +45,7 @@ public enum EntityType {
     MUSHROOM_COW("MushroomCow", MushroomCow.class, 96),
     SNOWMAN("SnowMan", Snowman.class, 97),
     OCELOT("Ozelot", Ocelot.class, 98),
-    IRON_GOLEM("VillagerGolem", IronGolem.class, 98),
+    IRON_GOLEM("VillagerGolem", IronGolem.class, 99),
     VILLAGER("Villager", Villager.class, 120),
     ENDER_CRYSTAL("EnderCrystal", EnderCrystal.class, 200),
     // These don't have an entity ID in nms.EntityTypes.