Fix bad javadoc issues

api/src/main/java/me/lucko/luckperms/api/Group.java

@@ -158,6 +158,7 @@ public interface Group extends PermissionObject {
     /**
      * Get a {@link List} of the groups the group inherits on a specific server
      * @param server the server to check
+     * @param world the world to check
      * @return a {@link List} of group names
      */
     List<String> getLocalGroups(String server, String world);

api/src/main/java/me/lucko/luckperms/api/User.java

@@ -182,6 +182,7 @@ public interface User extends PermissionObject {
     /**
      * Get a {@link List} of the groups the user is a member of on a specific server
      * @param server the server to check
+     * @param world the world to check
      * @return a {@link List} of group names
      */
     List<String> getLocalGroups(String server, String world);