Fix doc example typo
Fix doc example typo

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