[CNI] Classic CNI alerts

[marciocloudflare]

Summary

• Closes PCX15458
• Adds notifications for Classic CNI in cni docs
• Also populated YML file to show this in the Notification docs

Documentation checklist

• The documentation style guide has been adhered to.

[hyperlint-ai]

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PR Change Summary

Added notifications for Classic CNI in the documentation to inform users about routine maintenance events.

• Introduced alerts for Classic CNI to notify users of maintenance events
• Updated the documentation to include steps for setting up notifications
• Populated the YML file to reflect changes in the Notification docs

Modified Files

• src/content/docs/network-interconnect/classic-cni/index.mdx

Added Files

• src/content/docs/network-interconnect/classic-cni/alerts.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/network-interconnect/	@marciocloudflare, @cloudflare/pcx-technical-writing
*	@cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://484a08dd.preview.developers.cloudflare.com
Preview Branch URL: https://marcio-pcx15458-cni-alerts.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/network-interconnect/classic-cni/alerts/	https://marcio-pcx15458-cni-alerts.preview.developers.cloudflare.com/network-interconnect/classic-cni/alerts/
https://developers.cloudflare.com/network-interconnect/classic-cni/	https://marcio-pcx15458-cni-alerts.preview.developers.cloudflare.com/network-interconnect/classic-cni/

[pedrosousa]

Suggested change

	5. Enter a name for the notification and select your preferred alert method (webhook or email).
	5. Enter a name for the notification and select your preferred alert method (webhook or email).

Nit: Don't we also support PagerDuty for this notification? If that's the case, and this method list gets too long, maybe we can just link to a page listing the available methods.

[marciocloudflare]

I didn't see PagerDuty as an option for this one - unless my account has some sort of limitation?

[pedrosousa]

I think you need to configure PagerDuty first:
https://developers.cloudflare.com/notifications/get-started/configure-pagerduty/#connect-pagerduty-to-a-cloudflare-account