Fix to URL generation of the page

monthly_archive_patch

diff --git a/_plugins/monthly_archive_plugin.rb b/_plugins/monthly_archive_plugin.rb
index b6c6b59..b6ede86 100644
--- a/_plugins/monthly_archive_plugin.rb
+++ b/_plugins/monthly_archive_plugin.rb
@@ -65,7 +65,10 @@ module Jekyll
           'layout' => @layout,
           'type' => 'archive',
           'title' => "Monthly archive for #{@year}/#{@month}",
-          'posts' => posts
+          'posts' => posts,
+          'url' => File.join('/',
+                     site.config['monthly_archive']['path'],
+                     @archive_dir_name, 'index.html')
       }
     end