Readded a content removed by error

Author: javiereguiluz

messenger.rst

@@ -911,6 +911,9 @@ a table named ``messenger_messages``.
     The ability to automatically generate a migration for the ``messenger_messages``
     table was introduced in Symfony 5.1 and DoctrineBundle 2.1.
 
+Or, to create the table yourself, set the ``auto_setup`` option to ``false`` and
+:ref:`generate a migration <doctrine-creating-the-database-tables-schema>`.
+
 The transport has a number of options:
 
 .. configuration-block::