Chore(booking-job): Longer interval between thread load

backend/internal/ktmtrainbot/backgroundbookingjob.go

@@ -215,7 +215,6 @@ func (env *Env) startBooking(job *Booking, username string, password string, cre
 
 	threadCount := 10
 	for i := 0; i < threadCount; i++ {
-		time.Sleep(time.Millisecond * 100)
 		go func() {
 			defer func() {
 				if r := recover(); r != nil {
@@ -243,6 +242,7 @@ func (env *Env) startBooking(job *Booking, username string, password string, cre
 			cancelGetBookingSlot()
 			pageChan <- currPage
 		}()
+		time.Sleep(time.Millisecond * 1100)
 	}
 
 	// Wait for either page received or timeout