[#14565] Minor formatting fixes

Author: wouterj

mailer.rst

@@ -70,16 +70,17 @@ over SMTP by configuring the DSN in your ``.env`` file (the ``user``,
     If you are migrating from Swiftmailer (and the Swiftmailer bundle), be
     warned that the DSN format is different.
 
-Using built-in transports
+Using Built-in Transports
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
-============ ==================================== ===========
-DSN protocol Example                              Description
-============ ==================================== ===========
-smtp         smtp://user:[email protected]:25 Mailer uses an SMTP server to send emails
-sendmail     sendmail://default                   Mailer uses the local sendmail binary to send emails
-============ ==================================== ===========
-
+============  ========================================  ==============================
+DSN protocol  Example                                   Description
+============  ========================================  ==============================
+smtp          ``smtp://user:[email protected]:25``  Mailer uses an SMTP server to
+                                                        send emails
+sendmail      ``sendmail://default``                    Mailer uses the local sendmail
+                                                        binary to send emails
+============  ========================================  ==============================
 
 Using a 3rd Party Transport
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~

reference/configuration/framework.rst

@@ -2906,21 +2906,27 @@ Name of the lock you want to create.
 mailer
 ~~~~~~
 
+.. versionadded:: 4.3
+
+    The ``mailer`` settings were introduced in Symfony 4.3.
+
 .. _mailer-dsn:
 
 dsn
 ...
 
-**type**: ``string``
+**type**: ``string`` **default**: ``null``
 
-The DSN used by the mailer. When several DSN may be used, use `transports` (see below) instead.
+The DSN used by the mailer. When several DSN may be used, use
+``transports`` option (see below) instead.
 
 transports
 ..........
 
 **type**: ``array``
 
-A :ref:`list of DSN <multiple-email-transports>` that can be used by the mailer. A transport name is the key and the dsn is the value.
+A :ref:`list of DSN <multiple-email-transports>` that can be used by the
+mailer. A transport name is the key and the dsn is the value.
 
 envelope
 ........
@@ -2930,14 +2936,16 @@ sender
 
 **type**: ``string``
 
-Sender used by the ``Mailer``. Keep in mind that this setting override a sender set in the code.
+Sender used by the ``Mailer``. Keep in mind that this setting override a
+sender set in the code.
 
 recipients
 """"""""""
 
 **type**: ``array``
 
-Recipients used by the ``Mailer``. Keep in mind that this setting override recipients set in the code.
+Recipients used by the ``Mailer``. Keep in mind that this setting override
+recipients set in the code.
 
 .. configuration-block::
 
@@ -2963,8 +2971,8 @@ Recipients used by the ``Mailer``. Keep in mind that this setting override recip
             <framework:config>
                 <framework:mailer dsn="smtp://localhost:25">
                     <framework:envelope>
-                        <framework:recipients>[email protected]</framework:recipients>
-                        <framework:recipients>[email protected]</framework:recipients>
+                        <framework:recipient>[email protected]</framework:recipient>
+                        <framework:recipient>[email protected]</framework:recipient>
                     </framework:envelope>
                 </framework:mailer>
             </framework:config>