race: change the start of countdown from 6 to 3 (#216)

Author: xLive

[gamemodes]/[race]/race/race_server.lua

@@ -358,7 +358,7 @@ function launchRace()
     gotoState('Running')
 end
 
-g_RaceStartCountdown = Countdown.create(6, launchRace)
+g_RaceStartCountdown = Countdown.create(3, launchRace)
 g_RaceStartCountdown:useImages('img/countdown_%d.png', 474, 204)
 g_RaceStartCountdown:enableFade(true)
 g_RaceStartCountdown:addClientHook(3, 'playSoundFrontEnd', 44)