pd: add an example for pd-recover

[lhy1024]

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[lilin90]

/lgtm

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[LGTM Timeline notifier]

Timeline:

• 2024-08-02 06:29:55.996249003 +0000 UTC m=+70993.215010596: ☑️ agreed by hfxsd.
• 2024-08-05 07:24:55.836934276 +0000 UTC m=+250425.704033365: ☑️ 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-8.1: #18276.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.2: #18277.