Fix help message for listtransactions.
Fix help message for listtransactions.

Dirbaio/btcd,ppcsuite/ppcd-old,runeaune/btcd,cqswxj2013/btcd,jimmysong/btcd,qchain/btcd,wallclockbuilder/btcd,soapboxsys/ombfullnode,jongillham/btcd,dajohi/btcd,tb00/btcd,dajohi/btcd,dan-da/btcd,glv2/ppcd,Dirbaio/btcd,ppcsuite/ppcd-old,Evil-Coin/Evil,pkothbauer/btcd,danoctavian/btcd,DanielKrawisz/btcd,jrick/btcd,ltcsuite/ltcd,dajohi/btcd,mathiasrw/btcd,mathiasrw/btcd,CryptocurrencyCabal/htcd,jcmincke/dcrd,hectorj/btcd,jrick/btcd,Stash-Crypto/btcd,btcsuite/btcd,BitGo/prova,jongillham/btcd,toddfries/btcd,btcsuitereleases/btcd,jcmincke/dcrd,Roasbeef/btcd,adiabat/btcd,danoctavian/btcd,jrick/dcrd,1d4Nf6/btcd,sysbot/btcd,ltcsuite/ltcd,FactomProject/btcd,jimmysong/btcd,qchain/btcd,FactomProject/btcd,runeaune/btcd,Cleawing/btcd,btcsuite/btcd,Stash-Crypto/btcd,davecgh/btcd,cjepson/btcd,cjepson/btcd,Dirbaio/btcd,Cleawing/btcd,DanielKrawisz/btcd,decred/dcrd,pkothbauer/btcd,Roasbeef/btcd,ppcsuite/ppcd,glv2/ppcd,aakselrod/btcd,cqswxj2013/btcd,hectorj/btcd,dan-da/btcd,aakselrod/btcd,soapboxsys/ombfullnode,jcmincke/dcrd,jrick/dcrd,jrick/btcd,adiabat/btcd,wallclockbuilder/btcd,sysbot/btcd,davecgh/btcd,ppcsuite/ppcd,1d4Nf6/btcd,decred/dcrd,BitGo/prova,stevenroose/btcd,toddfries/btcd,stevenroose/btcd,CryptocurrencyCabal/htcd,Evil-Coin/Evil,tb00/btcd,btcsuitereleases/btcd