feat: review the bottom navigation

src/_layouts/article.njk

@@ -28,8 +28,18 @@ templateClass: tmpl-post
   {%- if nextArticle or previousArticle %}
     <nav class="post-nav">
       <ul>
-        {%- if previousArticle %}<li class="previous">Précédent : <a href="{{ previousArticle.url }}">{{ previousArticle.data.title }}</a></li>{% endif %}
-        {%- if nextArticle %}<li class="next">Suivant : <a href="{{ nextArticle.url }}">{{ nextArticle.data.title }}</a></li>{% endif %}
+        {%- if previousArticle %}<li class="previous">
+          <a href="{{ previousArticle.url }}" title="Article précédent">
+            <span class="icon" aria-hidden="true">«</span>
+            <span>{{ previousArticle.data.title }}</span>
+          </a>
+          </li>{% endif %}
+        {%- if nextArticle %}<li class="next">
+          <a href="{{ nextArticle.url }}" title="Article suivant">
+            <span>{{ nextArticle.data.title }}</span>
+            <span class="icon" aria-hidden="true">»</span>
+          </a>
+          </li>{% endif %}
       </ul>
     </nav>
   {%- endif %}