Update mailer.rst

Author: atailouloute

components/mailer.rst

@@ -64,7 +64,7 @@ it:
 
 Then, use the SMTP Gmail transport::
 
-    use Symfony\Component\Mailer\Bridge\Google\Smtp\GmailSmtpTransport;
+    use Symfony\Component\Mailer\Bridge\Google\Transport\GmailSmtpTransport;
     use Symfony\Component\Mailer\Mailer;
 
     $transport = new GmailSmtpTransport('user', 'pass');