reference: rename TiDB Controller to TiDB Control (#2304)#2311

sre-bot merged 4 commits into

pingcap:release-2.1pingcap/docs:release-2.1from

sre-bot:release-2.1-25fc1ef9b8fasre-bot/docs:release-2.1-25fc1ef9b8faCopy head branch name to clipboard