[Spectrum] Clarify edgeIP assignment per hostname and connection termination

[angelampcosta]

Summary

Clarify edgeIP assignment per hostname and connection termination.

Documentation checklist

• The documentation style guide has been adhered to.

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PR Change Summary

Clarified edgeIP assignment per hostname and connection termination in Spectrum documentation.

• Updated the explanation of static IP assignment to clarify that it is associated with the DNS name rather than individual Spectrum applications.
• Specified that Spectrum terminates TCP and UDP sockets at Layer 4, while not terminating connections in the application-layer sense.

Modified Files

• src/content/docs/spectrum/about/static-ip.mdx
• src/content/docs/spectrum/reference/configuration-options.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/spectrum/	@angelampcosta, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://bb26eeb8.preview.developers.cloudflare.com
Preview Branch URL: https://angela-spectrum-updates.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/spectrum/about/static-ip/	https://angela-spectrum-updates.preview.developers.cloudflare.com/spectrum/about/static-ip/
https://developers.cloudflare.com/spectrum/reference/configuration-options/	https://angela-spectrum-updates.preview.developers.cloudflare.com/spectrum/reference/configuration-options/