Overview page uses terms not mentioned in the docs

[zhangysh1995]

Feature Request

Is your feature request related to a problem? Please describe:

I expected QPS to appear for the bars, but OPS is used. Then I read the documentation but cannot find an explanation of the term.

Describe the feature you'd like:

Explain the abbreviations such as OPS on the dashboard

Describe alternatives you've considered:

Use the same term QPS consistently

Teachability, Documentation, Adoption, Migration Strategy:
https://docs.pingcap.com/zh/tidb/dev/dashboard-overview

[breezewish]

Thanks for the report! We are aware of this inconsistent. However it may require some notable effort to fix, which is related to the unit formatting library we use, since "ops" is a valid unit while "qps" is not. PRs are welcome!