Add a hyphen on kubectl command: from kubectl exec -it - to kubectl exec -it --
because - is not valid syntax, and will throw an error message. Detail inside the #2586
Which TiDB Operator version(s) do your changes apply to? (Required)
Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/pingcap/docs-tidb-operator/blob/release-1.5/OWNERS)~~ [Oreoxmt]
Approvers can indicate their approval by writing `/approve` in a comment
Approvers can cancel approval by writing `/approve cancel` in a comment
This is an automated cherry-pick of #2587
#2586 Example syntax error in eng doc.
What is changed, added, or deleted? (Required)
Add a hyphen on kubectl command: from kubectl exec -it - to kubectl exec -it -- because - is not valid syntax, and will throw an error message. Detail inside the #2586
Which TiDB Operator version(s) do your changes apply to? (Required)
What is the related PR or file link(s)?
NA