Results 291 comments of Aolin

@dveeden https://github.com/dveeden/docs/pull/6 PTAL

@HuSharp I've submitted a PR that revises the wording and structure of this document, PTAL https://github.com/HuSharp/docs-tidb-operator/pull/1

@Benjamin2037 Please take a look at this issue and submit a pull request to update relevant description. The current PR https://github.com/pingcap/docs-cn/pull/18626 only modifies the system variable.