fix: toc not rendering correctly

[lamATnginx]

Proposed changes

Fixed issue related to thread internal thread.

Checklist

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• I have read the CONTRIBUTING document
• If applicable, I have added tests that prove my fix is effective or that my feature works
• If applicable, I have checked that any relevant tests pass after adding my changes
• I have updated any relevant documentation (README.md and CHANGELOG.md)

[nginx-jack]

Pushed to docs-dev to validate. LGTM.

The new theme on a preview build of this doesn't render the product name, but I can't reproduce locally or in dev. Something to watch out for.

[lamATnginx]

Do you have a screenshot of it on preview? Not seeing it in your preview build