pd: add an example for pd-recover

[hfxsd]

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• This PR is translated from:pd: add an example for pd-recover docs-cn#18228
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[LGTM Timeline notifier]

Timeline:

• 2024-08-05 07:31:23.07817208 +0000 UTC m=+250812.945271168: ☑️ agreed by lilin90.

[hfxsd]

/approve

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.2: #18485.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #18486.