Additional bullet in the toc table

In the JIRA documentation on extranet we noticed some issue with the bullet numbering in the toc.

Please follow this link: http://confluence.atlassian.com/display/JIRA/Installing+JIRA+Standalone+on+Mac+OS

I reproduced this problem, but couldn't explain from the wiki markup why it's happening. Please have a look:

https://extranet.atlassian.com/display/~fschmitz/Confluence+Test