How do I change Plugin page on ww.wp.xz.cn

I’m trying to find a way to edit my plugin page on ww.wp.xz.cn: http://ww.wp.xz.cn/extend/plugins/flocknote/

I’d like to add a tag or two, and probably add a little to the description. For the description, is that actually coming in from the readme.txt file, or is that editable elsewhere?