Fix JavaDoc errors

src/main/java/world/bentobox/bentobox/database/json/adapters/EnumTypeAdapter.java

@@ -21,7 +21,7 @@ public final class EnumTypeAdapter<T extends Enum<T>> extends TypeAdapter<T> {
 
 
     /**
-     * Bimap to store name <-> enum references
+     * Bimap to store name,enum pair references
      */
     private final BiMap<String, T> enumMap = HashBiMap.create();
 

src/main/java/world/bentobox/bentobox/listeners/flags/worldsettings/CleanSuperFlatListener.java

@@ -103,7 +103,6 @@ public class CleanSuperFlatListener extends FlagListener {
     /**
      * This method clears the chunk from queue in the given world
      * @param world The world that must be cleared.
-     * @param cg Chunk generator.
      */
     private void cleanChunk(World world)
     {

src/main/java/world/bentobox/bentobox/util/ItemParser.java

@@ -182,9 +182,13 @@ public class ItemParser {
     /**
      * This method parses array of 6 items into an item stack.
      * Format:
+     * <pre>{@code 
      *      POTION:NAME:<LEVEL>:<EXTENDED>:<SPLASH/LINGER>:QTY
+     * }</pre>
      * Example:
+     * <pre>{@code 
      *      POTION:STRENGTH:1:EXTENDED:SPLASH:1
+     * }</pre>
      * @param part String array that contains 6 elements.
      * @return Potion with given properties.
      */
@@ -257,13 +261,17 @@ public class ItemParser {
     /**
      * This method parses array of 2 to 3 elements that represents player head.
      * Format:
+     * <pre>{@code 
      *    PLAYER_HEAD:<STRING/Trimmed UUID/UUID/Texture>:QTY
      *    PLAYER_HEAD:<STRING/Trimmed UUID/UUID/Texture>
      *    PLAYER_HEAD:QTY
+     * }</pre>
      * Example:
+     * <pre>{@code 
      *    PLAYER_HEAD:1
      *    PLAYER_HEAD:BONNe1704
      *    PLAYER_HEAD:eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYWY1ZjE1OTg4NmNjNTMxZmZlYTBkOGFhNWY5MmVkNGU1ZGE2NWY3MjRjMDU3MGFmODZhOTBiZjAwYzY3YzQyZSJ9fX0:1
+     * }</pre>
      * @param part String array that contains at least 2 elements.
      * @return Player head with given properties.
      */

src/main/java/world/bentobox/bentobox/util/Util.java

@@ -59,7 +59,7 @@ import world.bentobox.bentobox.nms.WorldRegenerator;
  */
 public class Util {
     /**
-     * Use standard color code definition: &<hex>.
+     * Use standard color code definition: {@code &<hex>}.
      */
     private static final Pattern HEX_PATTERN = Pattern.compile("&#([a-fA-F0-9]{6}|[a-fA-F0-9]{3})");
     private static final String NETHER = "_nether";