[link-checker] Fix broken documentation link in Changelog.md

[Amaury Levé (Evangelink)]

Summary

Fixes#9732

Corrects a malformed markdown link in docs/Changelog.md (line 1112). The link for PR #4218 used ) instead of ] to close the link text portion, making it invalid markdown and causing the link checker to flag it as broken.

• Before: [#4218)(https://github.com/microsoft/testfx/pull/4218)
• After: [#4218](https://github.com/microsoft/testfx/pull/4218)

All other links flagged by the daily link check were confirmed as false positives or unfixable (localhost URLs, non-existent repos/tags, NuGet firewall blocks, badge parsing artifacts).

[Copilot]

Pull request overview

This PR fixes a single malformed markdown link in docs/Changelog.md (line 1112). The link for PR #4218 incorrectly used ) instead of ] to close the link text, producing invalid markdown that the daily link checker flagged as broken. The correction aligns the line with the standard [#NNNN](url) format used consistently throughout the changelog (e.g., the adjacent line 1111 for #4212).

Changes:

• Corrected the closing delimiter of the link text from ) to ] for PR #4218.

Show a summary per file

File	Description
docs/Changelog.md	Fixes the malformed markdown link syntax for PR #4218 so it renders and validates correctly.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Medium

[github-actions]

Note

🤖 Automated review by GitHub Copilot. Generated by the Expert Code Review workflow. To request a follow-up action, reply by tagging @copilot directly.

✅ 22/22 dimensions clean — no findings.

Scope: Documentation-only fix — corrects a malformed markdown link in docs/Changelog.md (line 1112) where ) was used instead of ] to close the link text portion of [#4218](...).