refresh check out page

Update the checkout page layout.

add_action('woocommerce_review_order_before_cart_contents', function (){
   if (!WC()->cart->is_empty()){
		  WC()->cart->calculate_totals();
    }
	 if ( is_checkout() ) {
    ?>
    <script type="text/javascript">
      jQuery(function($){
         $(document.body).trigger("update_checkout")
      });
    </script>
    <?php
	 }
});