fixed indentation

Resources/views/standard_layout.html.twig

@@ -97,7 +97,7 @@ file that was distributed with this source code.
                                             </ul>
                                         </li>
                                     {% endfor %}
-									{% block after_nav %} {% endblock %}
+                                    {% block after_nav %} {% endblock %}
                                 </ul>
                             {% endif %}