Update index.html
Update index.html

Fixed event link for hackatl
jmcduffie32/NewDevATL-bootstrap,jmcduffie32/NewDevATL-bootstrap,jmcduffie32/NewDevATL,LeahW/NewDevATL,LeahW/NewDevATL,GitsAndGlamour/NewDevATL,king0120/NewDevATL,jmcduffie32/NewDevATL