using shortcode on a page and link description

Hello
Thank you for the plugin.
I used it on this page:
http://nuage-pluie.org/liens/

I would like to see a description of links, I used the following shortcode:
[dreadings feed_url = "http://delicious.com/v2/rss/musatge" display-desc = true]
but I do not get the description.
An idea, thank you

http://ww.wp.xz.cn/extend/plugins/delicious-readings/