minor #12512 [Mailer][Mime] NamedAddress was removed in 4.4 (ogizanagi)

This PR was merged into the 4.4 branch.

Discussion
----------

[Mailer][Mime] NamedAddress was removed in 4.4

It was removed in 4.4 (symfony/symfony#33270) in favor of using Address with a second arg.

Commits
-------

9b6eb23 [Mailer][Mime] NamedAddress was removed in 4.4

Author: javiereguiluz

mailer.rst

@@ -149,7 +149,7 @@ both strings or address objects::
 
         // defining the email address and name as an object
         // (email clients will display the name)
-        ->from(new NamedAddress('fabien@example.com', 'Fabien'))
+        ->from(new Address('fabien@example.com', 'Fabien'))
 
         // defining the email address and name as a string
         // (the format must match: 'Name <email@example.com>')