doc: Update high-level addrman description
doc: Update high-level addrman description

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