Update pagination for test_site posts

test_site/content/posts/_index.md

@@ -3,4 +3,5 @@ title = "Posts"
 paginate_by = 2
 template = "section_paginated.html"
 insert_anchor_links = "left"
+sort_by = "date"
 +++

test_site/templates/page.html

@@ -3,6 +3,6 @@
 {% block content %}
     {{ page.content | safe }}
 
-    {% if page.previous %}Previous article: {{ page.previous.permalink }}{% endif %}
-    {% if page.next %}Next article: {{ page.next.permalink }}{% endif %}
+    {% if page.earlier %}Previous article: {{ page.earlier.permalink }}{% endif %}
+    {% if page.later %}Next article: {{ page.later.permalink }}{% endif %}
 {% endblock content %}