doc: mention BIP86 in doc/bips.md
doc: mention BIP86 in doc/bips.md

AkioNak/bitcoin,kallewoof/bitcoin,tecnovert/particl-core,jambolo/bitcoin,particl/particl-core,fanquake/bitcoin,AkioNak/bitcoin,lateminer/bitcoin,tecnovert/particl-core,mruddy/bitcoin,jambolo/bitcoin,AkioNak/bitcoin,mruddy/bitcoin,particl/particl-core,particl/particl-core,jambolo/bitcoin,bitcoin/bitcoin,particl/particl-core,lateminer/bitcoin,namecoin/namecoin-core,bitcoin/bitcoin,lateminer/bitcoin,tecnovert/particl-core,mruddy/bitcoin,fanquake/bitcoin,AkioNak/bitcoin,AkioNak/bitcoin,fanquake/bitcoin,bitcoin/bitcoin,kallewoof/bitcoin,AkioNak/bitcoin,particl/particl-core,kallewoof/bitcoin,namecoin/namecoin-core,fanquake/bitcoin,mruddy/bitcoin,bitcoin/bitcoin,jambolo/bitcoin,namecoin/namecoin-core,mruddy/bitcoin,lateminer/bitcoin,fanquake/bitcoin,jambolo/bitcoin,bitcoin/bitcoin,kallewoof/bitcoin,namecoin/namecoin-core,kallewoof/bitcoin,lateminer/bitcoin,mruddy/bitcoin,tecnovert/particl-core,namecoin/namecoin-core,tecnovert/particl-core,fanquake/bitcoin,particl/particl-core,lateminer/bitcoin,jambolo/bitcoin,bitcoin/bitcoin,tecnovert/particl-core,kallewoof/bitcoin,namecoin/namecoin-core