WORDPRESS, ADD CUSTOM TARGET TO LINKS OF SPECIFIC MENU ITEMS

function nav_replace_wpse_189788($item_output, $item) {
  if ('<- Πίσω στο BrandsMall' == $item->title) {
    global $my_profile;
    return '<a href="https://brandsmall.shop/" target="_top">&lt;- Πίσω στο BrandsMall</a>';
  }
  return $item_output;
}
add_filter('walker_nav_menu_start_el','nav_replace_wpse_189788',10,2);