fix versioning heading and copyright year
fix versioning heading and copyright year

gorcz/servo,entelesis/servo,eonezhang/servo,rspieldenner/servo,ccortezb/servo,entelesis/servo,sensaid/servo,fengshao0907/servo,Netflix/servo,sensaid/servo,fengshao0907/servo,eonezhang/servo,brharrington/servo,ccortezb/servo,brharrington/servo