Fix a handful of Javadoc issues - need to check through the rest later to ensure that we actually have updated JDs for everything

src/main/java/com/gmail/nossr50/skills/utilities/AbilityType.java

@@ -181,7 +181,7 @@ public enum AbilityType {
     /**
      * Check if a block is affected by this ability.
      *
-     * @param Block the block to check
+     * @param block the block to check
      * @return true if the block is affected by this ability, false otherwise
      */
     public boolean blockCheck(Block block) {

src/main/java/com/gmail/nossr50/skills/utilities/CombatTools.java

@@ -554,7 +554,7 @@ public final class CombatTools {
      * Check to see if the given LivingEntity should be affected by a combat ability.
      *
      * @param player The attacking Player
-     * @param livingEntity The defending LivingEntity
+     * @param entity The defending Entity
      * @return true if the Entity should be damaged, false otherwise.
      */
     public static boolean shouldBeAffected(Player player, Entity entity) {

src/main/java/com/gmail/nossr50/skills/utilities/SkillTools.java

@@ -312,7 +312,7 @@ public class SkillTools {
     /**
      * Checks if the given string represents a valid skill
      *
-     * @param skillname The name of the skill to check
+     * @param skillName The name of the skill to check
      * @return true if this is a valid skill, false otherwise
      */
     public static boolean isSkill(String skillName) {

src/main/java/com/gmail/nossr50/skills/utilities/SkillType.java

@@ -138,7 +138,7 @@ public enum SkillType {
      * Get the skill level for this skill.
      *
      * @param player The player to check
-     * @return
+     * @return the player's skill level
      */
     public int getSkillLevel(Player player) {
         return Users.getProfile(player).getSkillLevel(this);