dev guide: use SimpleTab to describe two MySQL clients (#12469)#12622

ti-chi-bot merged 1 commit into

pingcap:release-6.6pingcap/docs:release-6.6from

ti-chi-bot:cherry-pick-12469-to-release-6.6ti-chi-bot/docs:cherry-pick-12469-to-release-6.6Copy head branch name to clipboard