[WAF] Add content scanning limitations

[pedrosousa]

Summary

Requested via internal chat.

[hyperlint-ai]

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PR Change Summary

Added content scanning limitations for the WAF, specifying types of files that the AV scanner will not scan.

• Specified limitations for the AV scanner regarding file types that will not be scanned.
• Outlined specific file types such as password-protected archives and PGP-encrypted files that are excluded from scanning.

Modified Files

• src/content/docs/waf/detections/malicious-uploads/index.mdx

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[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/docs/waf/	@pedrosousa, @cloudflare/firewall, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://79cc8299.preview.developers.cloudflare.com
Preview Branch URL: https://pedro-2025-05-26-waf-update-content-scanning.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/waf/detections/malicious-uploads/	https://pedro-2025-05-26-waf-update-content-scanning.preview.developers.cloudflare.com/waf/detections/malicious-uploads/