Add (sorted)multi_a descriptors to doc/descriptors.md
Add (sorted)multi_a descriptors to doc/descriptors.md

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