Fix list styles

src/blog/index.html

@@ -8,7 +8,7 @@ pagination:
 <main class="wrapper-md stack-lg">
     <h1>Blog posts</h1>
 
-    <ol class="stack-xl">
+    <ol class="stack-xl" role='list'>
         {% for item in pagination.items %}
         <li class="stack-xs">
             <h2><a href="/post/{{ item.slug }}">{{ item.title.rendered | safe }}</a></h2>