minor #18743 [Messenger] [Messenger ] Add explanation on how to set default messenger table name (r1n0x)

This PR was submitted for the 6.3 branch but it was merged into the 5.4 branch instead.

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[Messenger] [Messenger ] Add explanation on how to set default messenger table name

Added explanation on how to set default messenger table name

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f24201e Update messenger.rst

Author: javiereguiluz

messenger.rst

@@ -1445,6 +1445,14 @@ 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.
 
+If you would like to change the name of the default table you can pass it in the DSN
+settings by using the ``table_name`` option.
+
+.. code-block:: env
+
+    # .env
+    MESSENGER_TRANSPORT_DSN=doctrine://default?table_name=your_table_name
+
 Or, to create the table yourself, set the ``auto_setup`` option to ``false`` and
 :ref:`generate a migration <doctrine-creating-the-database-tables-schema>`.