[Testing] Updated Link from Trac Home

[Greg Smith]

Hi All,

FYI, Brian found a broken link on the trac home page:
dev.laptop.org

This text "See Trac tickets for some hints on filing tickets. "

Linked to http://wiki.laptop.org/go/Trac_tickets

that is non-existent so I changed it to link to:
http://wiki.laptop.org/go/Submitting_bugs

That new one isn't great either so please improve as needed!

Thanks,

Greg S