如何在123-reg上重定向页面php页面以删除结束“/”

My current webpage is listed in Google as http://www.rg-s.co.uk/suvatcalculator.php/.

Due to the fact it has the end /, the CSS does not load correctly. Yet when I access the page normally via http://www.rg-s.co.uk/suvatcalculator.php, the page loads fine.

Is there a way I can redirect the page with / to the correct page using 123-Reg?

Thank you in advance,

if(isset($_SERVER["PATH_INFO"]) && !empty($_SERVER["PATH_INFO"])
{
  $protocol="http";
  if(isset(_SERVER["HTTPS"]))
  {
    $protocol="https";
  }
  header ("Location: $protocol//{$_SERVER["HTTP_HOST"]}/{$_SERVER["SCRIPT_NAME"]});
  exit; 
}