Minor tweak

Author: javiereguiluz

doctrine/registration_form.rst

@@ -11,7 +11,10 @@ already explained in other articles. Specifically, to implement a registration
 form you must:
 
 #. :ref:`Define a class to represent users <create-user-class>`;
-#. :doc:`Create a form </forms>` to ask for the registration information;
+#. :doc:`Create a form </forms>` to ask for the registration information (you can
+   generate this with the ``make:registration-form`` command provided by the `MakerBundle`_);
 #. Create :doc:`a controller </controller>` to :ref:`process the form <processing-forms>`;
 #. :ref:`Protect some parts of your application <security-authorization>` so
    only registered users can access to them.
+
+.. _`MakerBundle`: https://symfony.com/doc/current/bundles/SymfonyMakerBundle/index.html