Add "What is PayPal?" text to PayPal Payments gateway title

functions.php

<?php

function add_ppcp_gateway_title_link( $title, $id ) {
   if ( 'ppcp-gateway' === $id ) {
      $title .= sprintf( '  <a href="%s" class="about_ppcp" onclick="javascript:window.open(\'%s\',\'WIPPcp\',\'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, width=1060, height=700\'); return false;" title="What is PayPal?">What is PayPal?</a>', esc_url( 'https://www.paypal.com/us/webapps/mpp/paypal-popup' ), esc_url( 'https://www.paypal.com/us/webapps/mpp/paypal-popup' ) );
   }
 
   return $title;
}
add_filter( 'woocommerce_gateway_title', 'add_ppcp_gateway_title_link', 10, 2 );