[Rules] Update example-rules.mdx

[luishcardoso]

Hello team,

Summary

Can we add this docs here for further info on 5XX?

https://developers.cloudflare.com/support/troubleshooting/http-status-codes/cloudflare-5xx-errors/

Thanks.

[cloudflare-docs-bot]

Review

💡 1 suggestion found in commit a8c4afe.

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Suggestions (1)

File	Issue
rules/custom-errors/example-rules.mdx line 22	Passive voice — Line uses passive voice: "The HTTP status code of the custom error response will be set to 530." Fix: Rewrite active voice: "The HTTP status code of the custom error response is 530." or "This sets the HTTP status code of the custom error response to 530."

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