Merge branch 'header_update' into 'master'

Update header links and wording

See merge request validata/validata-ui!5

validata_ui/templates/base_template.html

@@ -22,8 +22,8 @@
         <a class="navbar-brand" href="{{ url_for('home') }}">
             <img src="{{ url_for('static', filename='img/logo-horizontal.png') }}" height="15" alt="Validata" />
         </a>
-        <a class="nav-link" href="http://validata.fr/" target="_blank">Wiki</a>
-        <a class="nav-link" href="https://scdl.opendatafrance.net/docs" target="_blank">Documentation</a>
+        <a class="nav-link" href="https://validata.fr/doku.php?id=utilisation" target="_blank">Mode d'emploi</a>
+        <a class="nav-link" href="https://scdl.opendatafrance.net/docs" target="_blank">Documentation SCDL</a>
         <a class="nav-link" href="https://teamopendata.org/c/socle-commun-des-donnees-locales" target="_blank">Forum</a>
         <a class="btn btn-outline-danger ml-auto" rel="external" target="_blank" href="https://git.opendatafrance.net/validata/validata-ui/issues/new?issuable_template=Probl%C3%A8me">
             Signaler un problème