fix(blog): remove duplicate blog title for jan 2026

[malav2110]

Description

Removes duplicate blog title for January 2026 dos-mitigation-async-hooks

Validation

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After:

[vercel]

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Project	Deployment	Review	Updated (UTC)
nodejs-org	Ready	Preview	Jan 14, 2026 0:54am

[github-actions]

👋 Codeowner Review Request

The following codeowners have been identified for the changed files:

Team reviewers: @nodejs/nodejs-website

Please review the changes when you have a chance. Thank you! 🙏

[Copilot]

Pull request overview

This pull request removes a duplicate H1 heading from a blog post about a Node.js vulnerability. The title is already defined in the frontmatter metadata, making the markdown heading redundant.

Changes:

• Removed duplicate H1 markdown heading that duplicated the frontmatter title

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[bjohansebas]

LGTM!, fast tracking

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.01%. Comparing base (f0cb063) to head (cd84181).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8545   +/-   ##
=======================================
  Coverage   75.01%   75.01%           
=======================================
  Files         103      103           
  Lines        9036     9036           
  Branches      311      311           
=======================================
  Hits         6778     6778           
  Misses       2256     2256           
  Partials        2        2           

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[ovflowd]

@nodejs/nodejs-website Im fast tracking this :)