docs: add delegated_service and fix cloudflare_admin

[jeehoon-cf]

Summary

Screenshots (optional)

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The change adheres to the documentation style guide.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[cloudflare-docs-bot]

Review

⚠️ 1 warning found in commit d17a272.

👉 Fix in your agent 👈

Fix the following review findings in PR #33402 (https://github.com/cloudflare/cloudflare-docs/pull/33402).

Before making changes, review each finding and present a brief summary table:
- For each finding, state whether you agree, disagree, or need clarification
- If you disagree (e.g. the fix requires disproportionate effort for minimal benefit,
  or the finding is factually incorrect), explain why
- If you need clarification before deciding, ask those questions
- Then share your plan for which issues to tackle and in what order

After triaging, follow this order:
1. Post a comment on this PR for any findings you are skipping, with the finding ID and your reasoning.
2. Then commit the fixes for the legitimate findings.

The comment must come before the commit — the bot reads PR comments when a new
push triggers a review, so skip comments posted after the push will be missed.

---

## Conventions

### Warnings (1)

#### CV-f1bb77081134 · Description explains the work
- **File:** PR-level finding
- **Issue:** The PR description contains only the empty template ("### Summary", "### Screenshots (optional)", "### Documentation checklist" headings with HTML comments and unchecked boxes) and no human-written explanation of the change.
- **Fix:** Add a brief summary describing what the PR does, e.g. that it adds the delegated_service audit log entry and fixes the cloudflare_admin entry in the audit logs docs.

Code Review

This code review is in beta and may not always be helpful — use your judgment.

_{No code review issues found.}

Conventions

Warnings (1)

File

Issue

PR

Description explains the work — The PR description contains only the empty template ("### Summary", "### Screenshots (optional)", "### Documentation checklist" headings with HTML comments and unchecked boxes) and no human-written explanation of the change. Fix: Add a brief summary describing what the PR does, e.g. that it adds the delegated_service audit log entry and fixes the cloudflare_admin entry in the audit logs docs.

Style Guide Review

_{No style-guide issues found.}

Commands

Only codeowners can run commands. Post a comment with the command to trigger it.

Command	Description
/review	Runs a review now. Incremental if a prior review exists, full if not.
/full-review	Re-reviews the entire PR diff from scratch, ignoring incremental history. Useful after a rebase, when you want a fresh review, or if the bot gets out of sync and reports issues that no longer exist.
/ignore-review-limit	Permanently lifts the 2-review automatic limit for this PR. Future pushes will trigger reviews as normal.
/disable-auto-review	Stops automatic reviews from triggering on future pushes to this PR. Codeowners can still run /review or /full-review manually.
/rebase	Rebases the PR branch against production. On conflict, attempts to resolve automatically using AI. Stops with an explanation if confidence is not high enough.