small code fix

Author: iMattPro

skeleton/event/main_listener.php.twig

@@ -31,7 +31,7 @@ class main_listener implements EventSubscriberInterface
 {% endif %}
 {% endif %}
 {% if COMPONENT.phplistener %}
-	'core.display_forums_modify_template_vars'	=> 'display_forums_modify_template_vars',
+			'core.display_forums_modify_template_vars'	=> 'display_forums_modify_template_vars',
 {% endif %}
 {% if COMPONENT.permissions %}
 			'core.permissions'	=> 'add_permissions',