WordPress: rewrite wp author url

auth-url-rewrite.php

<?php
/**
 * author base url rewrire
 * 
 */
  function wp_author_base() {
      global $wp_rewrite;
      $author_slug = 'user-profile'; // change slug name here
      $wp_rewrite->author_base = $author_slug;
  }
  add_action('init', 'wp_author_base');