Backport of docs: KV tutorial becomes usage doc into release/1.18.x#20998

boruszak merged 2 commits intorelease/1.18.xhashicorp/consul:release/1.18.xfrom

backport/docs/tutorial-refresh-support/socially-integral-mulehashicorp/consul:backport/docs/tutorial-refresh-support/socially-integral-muleCopy head branch name to clipboard