Merge branch '6.4' into 7.0

* 6.4:
  Fix broken class links

Author: javiereguiluz

controller/value_resolver.rst

@@ -191,8 +191,8 @@ In addition, some components, bridges and official bundles provide other value r
 
 PSR-7 Objects Resolver:
     Injects a Symfony HttpFoundation ``Request`` object created from a PSR-7 object
-    of type :class:`Psr\\Http\\Message\\ServerRequestInterface`,
-    :class:`Psr\\Http\\Message\\RequestInterface` or :class:`Psr\\Http\\Message\\MessageInterface`.
+    of type ``Psr\Http\Message\ServerRequestInterface``,
+    ``Psr\Http\Message\RequestInterface`` or ``Psr\Http\Message\MessageInterface``.
     It requires installing :doc:`the PSR-7 Bridge </components/psr7>` component.
 
 Managing Value Resolvers

mailer.rst

@@ -1417,7 +1417,7 @@ deferred and will only happen just before the email is sent by the Messenger
 handler.
 
 When sending an email asynchronously, its instance must be serializable.
-This is always the case for :class:`Symfony\\Bridge\\Twig\\Mime\\Email`
+This is always the case for :class:`Symfony\\Component\\Mailer\\Mailer`
 instances, but when sending a
 :class:`Symfony\\Bridge\\Twig\\Mime\\TemplatedEmail`, you must ensure that
 the ``context`` is serializable. If you have non-serializable variables,