Fix BIP3 link in BIP360, touch up BIP3 reference in BIP347#2148

jonatack merged 1 commit intobitcoin:masterbitcoin/bips:masterfrom

boskodev790:fix/bip-0003-reference-broken-link-in-changelog-entriesboskodev790/bips:fix/bip-0003-reference-broken-link-in-changelog-entriesCopy head branch name to clipboard