Change text 'Prodcut Added' in YITH WooCommerce Request a Quote

functions.php

<?php 
add_filter('yith_ywraq_product_added_to_list_message', 'ywraq_change_product_added');  
function ywraq_change_product_added( $text ){   
  $text = "Done!"; 
  return $text; 
}