Fix javadoc errors/warnings

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

paper-api/src/main/java/org/bukkit/event/enchantment/EnchantItemEvent.java

@@ -39,7 +39,7 @@ public class EnchantItemEvent extends InventoryEvent implements Cancellable {
     /**
      * Gets the player enchanting the item
      *
-     * @returns enchanting player
+     * @return enchanting player
      */
     public Player getEnchanter() {
         return enchanter;

paper-api/src/main/java/org/bukkit/event/enchantment/PrepareItemEnchantEvent.java

@@ -33,7 +33,7 @@ public class PrepareItemEnchantEvent extends InventoryEvent implements Cancellab
     /**
      * Gets the player enchanting the item
      *
-     * @returns enchanting player
+     * @return enchanting player
      */
     public Player getEnchanter() {
         return enchanter;