title: Admin URL to my plugin's page
body: <p>My plugin is basically a link display page, for instance if you want to display a page with links to other websites.</p>
  
  <p>In wp-admin I have a menu item on the left side bar added with this code:</p>
  
  <pre><code>function bls_add_menu_page() {
      add_menu_page('Custom Links', 'Custom Links', 'manage_options', 
                    'customlinks', 'bsl_admin_page', '', 15);
  }
  </code></pre>
  
  <p>After adding a new link, I want to redirect to my plugin home page in admin. The URL when I click on my plugin menu link is :</p>
  
  <pre><code>localhost/wp-admin/admin.php?page=customlinks
  </code></pre>
  
  <p>How do I get that URL in Worpdress? Currently I just do this : </p>
  
  <pre><code>wp_redirect('/wp-admin/admin.php?page=customlinks'); 
  </code></pre>
  
  <p>but I hope there is a better way of getting my plugin admin URL? </p>