readme: added jumbo

readme.md

@@ -1,5 +1,4 @@
-Nette Mail: Sending E-mails
-===========================
+[![Nette Mail](https://github.com/nette/mail/assets/194960/ffcaf756-f36d-4a47-8f6c-539b5f139c90)](https://doc.nette.org/en/mail)
 
 [![Downloads this Month](https://img.shields.io/packagist/dm/nette/mail.svg)](https://packagist.org/packages/nette/mail)
 [![Tests](https://github.com/nette/mail/workflows/Tests/badge.svg?branch=master)](https://github.com/nette/mail/actions)
@@ -13,7 +12,7 @@ Introduction
 
 Are you going to send emails such as newsletters or order confirmations? Nette Framework provides the necessary tools with a very nice API.
 
-Documentation can be found on the [website](https://doc.nette.org/mailing).
+Documentation can be found on the [website](https://doc.nette.org/en/mail).
 
 
 [Support Me](https://github.com/sponsors/dg)