doc: Fix -changetype help text
doc: Fix -changetype help text

This was forgotten in commit 3ac38058ce0e80a9f4276bfa82951decdb237e9a

lateminer/bitcoin,jlopp/statoshi,lateminer/bitcoin,ajtowns/bitcoin,bitcoinsSG/bitcoin,instagibbs/bitcoin,bitcoinsSG/bitcoin,jlopp/statoshi,GroestlCoin/bitcoin,bitcoin/bitcoin,sstone/bitcoin,mm-s/bitcoin,achow101/bitcoin,mruddy/bitcoin,fanquake/bitcoin,fujicoin/fujicoin,anditto/bitcoin,GroestlCoin/bitcoin,fanquake/bitcoin,tecnovert/particl-core,bitcoinsSG/bitcoin,namecoin/namecoin-core,namecoin/namecore,Xekyo/bitcoin,dscotese/bitcoin,andreaskern/bitcoin,tecnovert/particl-core,GroestlCoin/bitcoin,lateminer/bitcoin,dscotese/bitcoin,bitcoinknots/bitcoin,mruddy/bitcoin,mm-s/bitcoin,domob1812/namecore,namecoin/namecore,jlopp/statoshi,Xekyo/bitcoin,kallewoof/bitcoin,domob1812/bitcoin,domob1812/namecore,mm-s/bitcoin,mruddy/bitcoin,kallewoof/bitcoin,pataquets/namecoin-core,bitcoin/bitcoin,pataquets/namecoin-core,fujicoin/fujicoin,fujicoin/fujicoin,pataquets/namecoin-core,jambolo/bitcoin,sstone/bitcoin,mm-s/bitcoin,namecoin/namecoin-core,AkioNak/bitcoin,mruddy/bitcoin,namecoin/namecoin-core,kallewoof/bitcoin,AkioNak/bitcoin,domob1812/bitcoin,jambolo/bitcoin,jamesob/bitcoin,anditto/bitcoin,GroestlCoin/GroestlCoin,achow101/bitcoin,particl/particl-core,fanquake/bitcoin,particl/particl-core,GroestlCoin/bitcoin,dscotese/bitcoin,domob1812/bitcoin,tecnovert/particl-core,ajtowns/bitcoin,AkioNak/bitcoin,andreaskern/bitcoin,namecoin/namecore,andreaskern/bitcoin,instagibbs/bitcoin,particl/particl-core,mruddy/bitcoin,AkioNak/bitcoin,kallewoof/bitcoin,namecoin/namecoin-core,bitcoinsSG/bitcoin,kallewoof/bitcoin,jlopp/statoshi,namecoin/namecoin-core,bitcoinknots/bitcoin,dscotese/bitcoin,namecoin/namecoin-core,AkioNak/bitcoin,fujicoin/fujicoin,tecnovert/particl-core,sstone/bitcoin,jamesob/bitcoin,instagibbs/bitcoin,Xekyo/bitcoin,tecnovert/particl-core,particl/particl-core,sstone/bitcoin,particl/particl-core,Xekyo/bitcoin,GroestlCoin/GroestlCoin,anditto/bitcoin,domob1812/namecore,bitcoin/bitcoin,bitcoin/bitcoin,namecoin/namecore,anditto/bitcoin,fanquake/bitcoin,mm-s/bitcoin,bitcoin/bitcoin,jlopp/statoshi,andreaskern/bitcoin,domob1812/bitcoin,bitcoinknots/bitcoin,GroestlCoin/GroestlCoin,achow101/bitcoin,lateminer/bitcoin,namecoin/namecore,jamesob/bitcoin,achow101/bitcoin,instagibbs/bitcoin,achow101/bitcoin,sipsorcery/bitcoin,fujicoin/fujicoin,jambolo/bitcoin,bitcoinsSG/bitcoin,jambolo/bitcoin,sipsorcery/bitcoin,ajtowns/bitcoin,sipsorcery/bitcoin,achow101/bitcoin,sstone/bitcoin,instagibbs/bitcoin,sipsorcery/bitcoin,domob1812/namecore,andreaskern/bitcoin,tecnovert/particl-core,jamesob/bitcoin,instagibbs/bitcoin,bitcoinknots/bitcoin,andreaskern/bitcoin,particl/particl-core,jambolo/bitcoin,pataquets/namecoin-core,domob1812/bitcoin,jlopp/statoshi,dscotese/bitcoin,sstone/bitcoin,ajtowns/bitcoin,jamesob/bitcoin,Xekyo/bitcoin,namecoin/namecore,domob1812/namecore,bitcoinknots/bitcoin,anditto/bitcoin,fanquake/bitcoin,dscotese/bitcoin,jamesob/bitcoin,lateminer/bitcoin,Xekyo/bitcoin,fujicoin/fujicoin,domob1812/bitcoin,mruddy/bitcoin,pataquets/namecoin-core,sipsorcery/bitcoin,bitcoin/bitcoin,sipsorcery/bitcoin,GroestlCoin/GroestlCoin,GroestlCoin/bitcoin,fanquake/bitcoin,ajtowns/bitcoin,ajtowns/bitcoin,anditto/bitcoin,bitcoinsSG/bitcoin,GroestlCoin/bitcoin,kallewoof/bitcoin,AkioNak/bitcoin,lateminer/bitcoin,pataquets/namecoin-core,GroestlCoin/GroestlCoin,GroestlCoin/GroestlCoin,jambolo/bitcoin,mm-s/bitcoin,domob1812/namecore