fixing misleading image for throttleFirst
fixing misleading image for throttleFirst

phajduk/reactivex.github.io,ReactiveX/reactivex.github.io,BattleShipPark/reactivex.github.io,BattleShipPark/reactivex.github.io,BattleShipPark/reactivex.github.io,phajduk/reactivex.github.io,phajduk/reactivex.github.io,ReactiveX/reactivex.github.io,ReactiveX/reactivex.github.io