Backport of Add known issues to Raft WAL docs. into release/1.15.x#16638

banks merged 2 commits intorelease/1.15.xhashicorp/consul:release/1.15.xfrom

backport/banks-patch-2/adequately-topical-ferrethashicorp/consul:backport/banks-patch-2/adequately-topical-ferretCopy head branch name to clipboard