title: I cannot see the menu that I create in my theme, in wordpress admin
body: <p>I register my main menu in my wordpress theme, but when i save and i try to see in my admin panel, 
  does not appear.</p>
  
  <p>The code:</p>
  
  <pre><code>function games_register_my_menus(){
      register_nav_menus(
          array(
              'main-menu' =&gt; __( 'Header Menu' )
          )
      );
  }
  
  add_action( 'init', 'games_register_my_menus' );
  </code></pre>