监控菜单下增加 dashboard 的链接

[shawn0915]

Question

This repository is ONLY used to solve problems related to DOCS-CN.
For other issues (TiDB, TiKV, etc), please move to other repositories.

Before asking a question, make sure you have:

• Searched existing Stack Overflow questions.

• Googled your question.

• Searched open and closed GitHub issues.

• Read the documentation:
  • TiDB Docs
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Now, please describe your question here:

TiDB Dashboard 可用于监控集群状态。
https://docs.pingcap.com/zh/tidb/stable/dashboard-intro/

但是在【监控与告警】菜单下只有 Prometheus 相关内容。
https://docs.pingcap.com/zh/tidb/stable/tidb-monitoring-framework/

能否在合适的地方增加 dashboard 的引导？方便查阅。

来着社区的困惑。
https://asktug.com/t/topic/1041313?u=shawnyan

Thank you.

[Oreoxmt]

@shawn0915 感谢反馈，已在文档 PR #20207 中更新