Minor rewrite of advice API docs
Minor rewrite of advice API docs

KyawNaingTun/flight,robertknight/flight,joelbyler/flight,giuseppeg/flight,david84/flight,flightjs/flight,Shinchy/flight,icecreamliker/flight,Shinchy/flight,KyawNaingTun/flight,icecreamliker/flight,david84/flight,flightjs/flight,robertknight/flight,joelbyler/flight,margaritis/flight