Clarify Cloudflare proxy requirement in CNAME flattening blog

[ChiragAgg5k]

Summary

• Reframes the Cloudflare mention so it no longer implies users keep full Cloudflare HTTP-layer features (caching, security headers) alongside Appwrite. Appwrite serves sites through its own CDN, so the proxy must be off.
• Adds a clear note in both the "Add a record, not a migration" section and step 4 of "Connect your domain" that Cloudflare records must be set to DNS only (grey cloud), not proxied.
• DNS-layer protections and MX records stay with the existing provider; Appwrite handles CDN / SSL / edge security.

Test plan

• Preview renders correctly at /blog/post/announcing-cname-flattening
• Confirm copy reads naturally and doesn't contradict other blog sections

[greptile-apps]

Greptile Summary

This PR corrects three passages in the CNAME flattening blog post that implied Cloudflare's HTTP-layer features (caching, security headers) remain active when using CNAME flattening with Appwrite. The intro now lists only what genuinely stays with the existing provider (email routing, DNS-layer protections), step 4 and the "Add a record" section both include a clear DNS only (grey cloud) callout for Cloudflare users, and Appwrite's own CDN/SSL/edge-security role is made explicit. The previous outside-diff concern about the intro implying Cloudflare proxy features could be preserved is resolved by the new wording on line 13.

Confidence Score: 5/5

Safe to merge — all changes are accurate content clarifications with no remaining blocking issues.

The prior P2 concern about the intro was resolved by the new wording. All three edits are factually correct and consistent with each other. No code logic or data is affected.

No files require special attention.

Important Files Changed

Filename	Overview
src/routes/blog/post/announcing-cname-flattening/+page.markdoc	Three targeted copy edits: intro reworded to remove misleading "caching/security" references; "Add a record" section clarified to distinguish DNS-layer vs. CDN features and adds Cloudflare grey-cloud note; step 4 adds the same grey-cloud instruction inline.

_{Reviews (3): Last reviewed commit: "Replace em dash with period in Connect y..." | Re-trigger Greptile}