fix(*): corrects a number of html validation issues

src/pages/sections/posts/index.html

@@ -29,7 +29,10 @@ permalink: "/posts/{% if pagination.pageNumber > 0 %}{{ pagination.pageNumber }}
   {% render "blocks/tags.liquid",
    tags:post.tags
   %}
-  <p>{{ post.description | markdown }}</p>
+  {% assign description = post.description | strip_newlines | strip %}
+  {% if description != '' %}
+    {{ description | markdown }}
+  {% endif %}
 </article>
 {% endfor %}
 {% render "nav/paginator.liquid",