docs: point site_url at the docs.cososo.co.uk custom domain

[DavidCozens]

The docs are going live behind docs.cososo.co.uk/solid-syslog/ (path-preserving redirect to the GitHub Pages URL). Point site_url at the public custom domain so canonical links, og:url, and the generated sitemap reference it rather than the cososo-ltd.github.io origin.

One line in mkdocs.yml. Internal navigation uses relative URLs, so nav is unaffected; site_url drives the canonical/sitemap/social metadata only. The /solid-syslog/ subpath is retained deliberately (leaves room for a docs.cososo.co.uk/<product>/ family).

Follow-up to the S23.04 go-live (#250). No Closes — that story is already merged.

Summary by CodeRabbit

• Documentation
  • Updated the documentation site address to the new official domain.
  • Existing documentation content and configuration remain unchanged.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro Plus

Run ID: c2e300d4-6e45-470e-a8cb-95c1a02483cc

📥 Commits

Reviewing files that changed from the base of the PR and between 6120054 and 551ea04.

📒 Files selected for processing (1)

• mkdocs.yml

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Walkthrough

MkDocs site_url now points to https://docs.cososo.co.uk/solid-syslog/ instead of the previous GitHub Pages URL.

Changes

Documentation site configuration

Layer / File(s)	Summary
Update MkDocs site URL mkdocs.yml	Changes site_url to the new documentation domain without altering other MkDocs settings.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• cososo-ltd/solid-syslog#601: Also updates documentation site configuration in mkdocs.yml.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description explains the change, but it does not follow the required template sections for Purpose, Change Description, Test Evidence, and Areas Affected.	Rewrite it to use the repository template, adding the four section headings with concise content under each.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise, conventional-commit style, and accurately summarises the site_url domain change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/site-url-custom-domain

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_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

☀️   Quality Summary

   🚦   build-linux-gcc: 100% successful (✔️ 1522 passed)
   🚦   build-freertos-host-tdd-plustcp: 100% successful (✔️ 1873 passed)
   🚦   build-linux-clang: 100% successful (✔️ 1453 passed)
   🚦   sanitize-linux-gcc: 100% successful (✔️ 1453 passed)
   🚦   integration-linux-openssl: 100% successful (✔️ 16 passed)
   🚦   integration-linux-mbedtls: 100% successful (✔️ 14 passed)
   🚦   integration-windows-openssl: 100% successful (✔️ 16 passed)
   🚦   bdd-linux-syslog-ng: 94% successful (✔️ 49 passed, 🙈 3 skipped)
   🚦   bdd-windows-otel: 88% successful (✔️ 46 passed, 🙈 6 skipped)
   🚦   bdd-freertos-qemu-plustcp: 87% successful (✔️ 45 passed, 🙈 7 skipped)
   🚦   bdd-freertos-qemu-lwip: 87% successful (✔️ 45 passed, 🙈 7 skipped)
   🚦   build-windows-msvc: 100% successful (✔️ 1298 passed)
   🚦   build-linux-tunable-override: 100% successful (✔️ 1453 passed)
   ⚠️   Clang-Tidy: No warnings
   ⚠️   CPPCheck: No warnings

---

Created by Quality Monitor v1.14.0 (#f3859fd). More details are shown in the GitHub Checks Result.

[github-actions]

☀️   Quality Summary

   🚦   build-linux-gcc: 100% successful (✔️ 1522 passed)
   🚦   build-freertos-host-tdd-plustcp: 100% successful (✔️ 1873 passed)
   🚦   build-linux-clang: 100% successful (✔️ 1453 passed)
   🚦   sanitize-linux-gcc: 100% successful (✔️ 1453 passed)
   🚦   integration-linux-openssl: 100% successful (✔️ 16 passed)
   🚦   integration-linux-mbedtls: 100% successful (✔️ 14 passed)
   🚦   integration-windows-openssl: 100% successful (✔️ 16 passed)
   🚦   bdd-linux-syslog-ng: 94% successful (✔️ 49 passed, 🙈 3 skipped)
   🚦   bdd-windows-otel: 88% successful (✔️ 46 passed, 🙈 6 skipped)
   🚦   bdd-freertos-qemu-plustcp: 87% successful (✔️ 45 passed, 🙈 7 skipped)
   🚦   bdd-freertos-qemu-lwip: 87% successful (✔️ 45 passed, 🙈 7 skipped)
   🚦   build-windows-msvc: 100% successful (✔️ 1298 passed)
   🚦   build-linux-tunable-override: 100% successful (✔️ 1453 passed)
   ⚠️   Clang-Tidy: No warnings
   ⚠️   CPPCheck: No warnings

---

Created by Quality Monitor v1.14.0 (#f3859fd). More details are shown in the GitHub Checks Result.