doc: Mac -> macOS in release notes template
doc: Mac -> macOS in release notes template

https://github.com/bitcoin/bitcoin/pull/26503#discussion_r1023782259

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