Fix #94 : Corrige lien aide en ligne

Change-Id: I989d9e0f03986602c069edc7a9de3efa35067acf

appli_sf/templates/default/utils/header.html.twig

@@ -10,7 +10,7 @@
                         <span>Déconnexion</span> <i class="icon-logout"></i>
                     </a>
                 {% endif %}
-                <a href="#" class="nav-action nav-help"><span>{% trans %}Aide{% endtrans %}</span> <i class="icon-question"></i></a>
+                <a href="{{ path('help') }}" class="nav-action nav-help"><span>{% trans %}Aide{% endtrans %}</span> <i class="icon-question"></i></a>
             </div>
         </div>
         <div class="nav-middle">