change article to post

layouts/index.html

@@ -29,7 +29,7 @@
             </a>
           </h2>
         {{ end }}
-        <a href="/article/" class="link db f6 pa2 br3 bg-mid-gray white dim w4 tc">All Posts</a>
+        <a href="/post/" class="link db f6 pa2 br3 bg-mid-gray white dim w4 tc">All Posts</a>
       </section>
 
     </div>