[MNM] Supernet auto advertisement

[marciocloudflare]

Summary

Closes PCX-9339

Documentation checklist

• The documentation style guide has been adhered to.

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PR Change Summary

Enhanced the documentation for the auto-advertisement feature in Magic Network Monitoring to include support for supernet capabilities.

• Updated the auto-advertisement section to mention supernet capability for Magic Transit.
• Clarified the prefix match options to include supernet advertising.
• Ensured consistency in references to the auto-advertisement section across multiple documents.

Modified Files

• src/content/docs/magic-network-monitoring/rules/dynamic-threshold.mdx
• src/content/docs/magic-network-monitoring/rules/s-flow-ddos-attack.mdx
• src/content/docs/magic-network-monitoring/rules/static-threshold.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/magic-network-monitoring/	@marciocloudflare, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://01686865.preview.developers.cloudflare.com
Preview Branch URL: https://marcio-pcx9339-mnm-supernets.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/magic-network-monitoring/rules/s-flow-ddos-attack/	https://marcio-pcx9339-mnm-supernets.preview.developers.cloudflare.com/magic-network-monitoring/rules/s-flow-ddos-attack/
https://developers.cloudflare.com/magic-network-monitoring/rules/dynamic-threshold/	https://marcio-pcx9339-mnm-supernets.preview.developers.cloudflare.com/magic-network-monitoring/rules/dynamic-threshold/
https://developers.cloudflare.com/magic-network-monitoring/rules/static-threshold/	https://marcio-pcx9339-mnm-supernets.preview.developers.cloudflare.com/magic-network-monitoring/rules/static-threshold/