[xwiki-users] check in the fixed version of tab extension

Hi All, i imported the tab extension from http://extensions.xwiki.org/xwiki/bin/view/Extension/Tabs+Macro. But it does not work fine. Switch tab does not work and content of all tab shows under first tab. I have fixed the issue as it required the small modification. How should i check in the fixed version or is there any point of contact whom i can intimate about the change.