br: link to BR monitoring and alert

[Oreoxmt]

What is changed, added or deleted? (Required)

Add link to BR monitoring and alert

Which TiDB version(s) do your changes apply to? (Required)

Tips for choosing the affected version(s):

By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions (in Chinese).

• master (the latest development version)
• v8.2 (TiDB 8.2 versions)
• v8.1 (TiDB 8.1 versions)
• v8.0 (TiDB 8.0 versions)
• v7.6 (TiDB 7.6 versions)
• v7.5 (TiDB 7.5 versions)
• v7.1 (TiDB 7.1 versions)
• v6.5 (TiDB 6.5 versions)
• v6.1 (TiDB 6.1 versions)
• v5.4 (TiDB 5.4 versions)
• v5.3 (TiDB 5.3 versions)
• v5.2 (TiDB 5.2 versions)
• v5.1 (TiDB 5.1 versions)

What is the related PR or file link(s)?

• This PR is translated from: br: link to BR monitoring and alert docs-cn#17772
• Other reference link(s):

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[Oreoxmt]

/cc @YuJuncen

[ti-chi-bot]

@YuJuncen: adding LGTM is restricted to approvers and reviewers in OWNERS files.

In response to this:

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-05 06:25:38.788019058 +0000 UTC m=+1564865.273507883: ☑️ agreed by hfxsd.

[Oreoxmt]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Oreoxmt

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [Oreoxmt]

Approvers can indicate their approval by writing /approve in a comment
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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #18143.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #18144.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #18145.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.2: #18146.