🩹 Fix modified date in article theme

theme-uberspot/templates/article_header.html

@@ -18,10 +18,11 @@
         <a href="/{{ translation.url }}">{{ translation.lang }}</a>
     {% endfor %}
 {% endif %}
-{% if article.updated %}
-  <time datetime="{{ article.updated }}" pubdate>Mis à jour le
-      <em>{{ article.updated }}</em>
-  </time>
+{% if article.modified %}
+<br/>
+<time datetime="{{ article.modified }}" pubdate>Mis à jour le
+    <em>{{ article.locale_modified }}</em>
+</time>
 {% endif %}
 {% if article.tags %}
     <ul class="tags">