Merge branch '4.2' into 4.3

* 4.2:
  Fixed heading levels
  Updated the explanation about Symfony server dependencies
  [Messenger] Fix hidden section title

Author: javiereguiluz

messenger/handler_results.rst

@@ -2,7 +2,7 @@
     single: Messenger; Getting results / Working with command & query buses
 
 Getting Results from your Handler
----------------------------------
+=================================
 
 When a message is handled, the :class:`Symfony\\Component\\Messenger\\Middleware\\HandleMessageMiddleware`
 adds a :class:`Symfony\\Component\\Messenger\\Stamp\\HandledStamp` for each object that handled the message.

setup/symfony_server.rst

@@ -14,9 +14,9 @@ PHP application and even with HTML/SPA (single page applications).
 Installation
 ------------
 
-The Symfony server is distributed as a free installable binary, without any
-dependency, and has support for Linux, macOS and Windows. Go to `symfony.com/download`_
-and follow the instructions for your operating system.
+The Symfony server is distributed as a free installable binary and has support
+for Linux, macOS and Windows. Go to `symfony.com/download`_ and follow the
+instructions for your operating system.
 
 .. note::