[Bleeding] Correct errors in LongGrass and MonsterEggs materials. Addresses BUKKIT-1083

By: Mike Primm <mike@primmhome.com>

paper-api/src/main/java/org/bukkit/material/LongGrass.java

@@ -8,7 +8,7 @@ import org.bukkit.Material;
  */
 public class LongGrass extends MaterialData {
     public LongGrass() {
-        super(Material.LOG);
+        super(Material.LONG_GRASS);
     }
 
     public LongGrass(GrassSpecies species) {

paper-api/src/main/java/org/bukkit/material/MonsterEggs.java

@@ -18,7 +18,7 @@ public class MonsterEggs extends TexturedMaterial {
     }
 
     public MonsterEggs() {
-        super(Material.SMOOTH_BRICK);
+        super(Material.MONSTER_EGGS);
     }
 
     public MonsterEggs(final int type) {