plugin on svn contains all the trunk and tags folder

I made the CommentLuv plugin a while ago and have been merrily updating it but I have noticed that when I download the plugin from the extend/plugins part of the site, it contains all the folders for tags and trunk.
it should only contain the plugin file and a readme in the zip which is causing problems for people wanting to install it.

how do I reset the svn so it downloads the correct zip file?