tikv: add max-ts configuration docs for v8.5.7#23197

qiancai wants to merge 4 commits into

pingcap:release-8.5pingcap/docs:release-8.5from

qiancai:avery/max-ts-config-doc-8.5-21745qiancai/docs:avery/max-ts-config-doc-8.5-21745Copy head branch name to clipboard