fixed discussion url id

source/_layouts/default.haml

@@ -70,7 +70,7 @@ google_analytics: true
               - if page.respond_to? :disqus_short_name
                 #disqus_thread
                 :javascript
-                  var disqus_url = "#{page.full_url}/#{page.url}";
+                  var disqus_url = "#{page.full_url}#{page.url}";
                 %noscript
                   %a(href="http://#{page.disqus_short_name}.disqus.com/?url=ref") View the discussion thread
                 %script(type="text/javascript" src="http://disqus.com/forums/#{page.disqus_short_name}/embed.js")