generate documentation from config.sample.php

admin_manual/configuration_server/config_sample_php_parameters.rst

@@ -1127,6 +1127,15 @@ filesystem instead of the database to keep the tags.
 
 Defaults to ``\OC\SystemTag\ManagerFactory``
 
+::
+
+	'mail_template_class' => '\OC\Mail\EMailTemplate',
+
+Replaces the default mail template layout. This can be utilized if the
+options to modify the mail texts with the theming app is not enough.
+
+The class must extend  ``\OC\Mail\EMailTemplate``
+
 Maintenance
 -----------