Fix pagination link on the blog index page

The link was incorrectly pointing to `{{site.baseurl}}/page2` when it
should have been pointing to `{{site.baseurl}}/blog/page2`.

Author: agude

blog/index.html

@@ -21,15 +21,15 @@ <h1 class="post-title">
 
 <div class="pagination">
   {% if paginator.next_page %}
-    <a class="pagination-item older" href="{{ site.baseurl }}page{{paginator.next_page}}">Older</a>
+    <a class="pagination-item older" href="{{ site.baseurl }}blog/page{{paginator.next_page}}">Older</a>
   {% else %}
     <span class="pagination-item older">Older</span>
   {% endif %}
   {% if paginator.previous_page %}
     {% if paginator.page == 2 %}
-      <a class="pagination-item newer" href="{{ site.baseurl }}">Newer</a>
+      <a class="pagination-item newer" href="{{ site.baseurl }}blog">Newer</a>
     {% else %}
-      <a class="pagination-item newer" href="{{ site.baseurl }}page{{paginator.previous_page}}">Newer</a>
+      <a class="pagination-item newer" href="{{ site.baseurl }}blog/page{{paginator.previous_page}}">Newer</a>
     {% endif %}
   {% else %}
     <span class="pagination-item newer">Newer</span>