Fix html error in navigation

_includes/nav.html

@@ -1,11 +1,11 @@
-  <aside>
+<aside>
   <nav>
     <ul>
-      {% for page in site.pages %} {% if page.title %}
+      {% for page in site.pages %} 
+      {% if page.title %}
       <li><a href="{{ page.url | prepend: site.baseurl }}">{{ page.title }}</a></li>
-      {% endif %} {% endfor %}
+      {% endif %} 
+      {% endfor %}
     </ul>
-  </li>
-</ul>
 </nav>
 </aside>