Merge branch '5.2' into 5.x

* 5.2:
  [CS] Add comma after last array item in multi-line array
  [Validator] Add a missing dot

Author: OskarStark

messenger.rst

@@ -187,7 +187,7 @@ that uses this configuration:
                     // or expanded to configure more options
                     'async' => [
                        'dsn' => '%env(MESSENGER_TRANSPORT_DSN)%',
-                       'options' => []
+                       'options' => [],
                     ],
                 ],
             ],

reference/constraints/Sequentially.rst

@@ -35,7 +35,7 @@ In such situations, you may encounter three issues:
 
 * the ``Length`` or ``Regex`` constraints may fail hard with a :class:`Symfony\\Component\\Validator\\Exception\\UnexpectedValueException`
   exception if the actual value is not a string, as enforced by ``Type``.
-* you may end with multiple error messages for the same property
+* you may end with multiple error messages for the same property.
 * you may perform a useless and heavy external call to geolocalize the address,
   while the format isn't valid.