Fix grammar & typos: custom developer portals page

[mintlify]

Summary

Fix two small copy issues in the new deploy/custom-portal.mdx page.

Changes

• Remove duplicate word "disabled disabled" in the "Search, personalization, and AI" step.
• Collapse a double space before "custom presentation layer" in the intro paragraph.

---

Note

Low Risk
Documentation wording only; no runtime, API, or security impact.

Overview
Copy-only fixes on the custom developer portals doc (deploy/custom-portal.mdx).

The intro now uses a single space before custom presentation layer. In the "Search, personalization, and AI" step, disabled is no longer repeated ("disabled disabled" → "disabled").

^{Reviewed by Cursor Bugbot for commit 0db3c1a. Bugbot is set up for automated code reviews on this repo. Configure here.}

[mintlify]

Preview deployment for your docs. Learn more about Mintlify Previews.

Project	Status	Preview	Updated (UTC)
mintlify	🔴 Failed	–	Jul 27, 2026, 9:14 PM

[mintiebot]

Preview deployment for your docs. Learn more about Mintlify Previews.

Project	Status	Preview	Updated (UTC)
tomee	🔴 Failed	–	Jul 27, 2026, 9:14 PM

💡 Tip: Enable Workflows to automatically generate PRs for you.