Update article_list.html

_includes/article_list.html

@@ -1,10 +1,10 @@
-<!-- _includes/article_list.html -->
 <div class="article-list">
   {% for article in site.data.articles_data.articles %}
     <div class="article-item">
       <a href="{{ article.url }}" target="_blank" rel="noopener noreferrer">
         <img src="{{ article.image }}" alt="{{ article.title }}" class="thumbnail">
         <h3>{{ article.title }}</h3>
+        <p class="published-date">公開日: {{ article.published }}</p>
       </a>
     </div>
   {% endfor %}