docs: fix Changelog-Platform links and add #9641 entry

[Evangelink]

Fixes #9657 and #9655.

Changes to docs/Changelog-Platform.md

#9655 — missing changelog entry
Added the entry for #9641 under [2.3.0] UNRELEASED → Added:

• Emit ::warning annotations for skipped tests in Microsoft.Testing.Extensions.GitHubActionsReport by @Evangelink in #9641

#9657 — broken documentation links
Retargeted two compare links from the defunct microsoft/testanywhere repo to microsoft/testfx, where the corresponding tags exist:

Old URL	New URL
.../testanywhere/compare/v1.3.1...v1.3.2	.../testfx/compare/v1.3.1...v1.3.2
.../testanywhere/compare/v1.2.1...v1.3.1	.../testfx/compare/v1.2.1...v1.3.1

The remaining testanywhere v1.4.x compare links are left unchanged, as noted in #9657 — the corresponding tags do not exist in microsoft/testfx.

Co-authored-by: Copilot App 223556219+Copilot@users.noreply.github.com

[Copilot]

Pull request overview

This PR updates the Microsoft.Testing.Platform changelog to (1) include a missing entry for a recently merged feature and (2) fix historical “compare” links that pointed to the defunct microsoft/testanywhere repository by retargeting them to microsoft/testfx, where the referenced tags exist.

Changes:

• Added the missing [2.3.0] UNRELEASED → Added entry for PR #9641 (GitHub Actions skipped-test ::warning annotations).
• Fixed two broken “See full log” compare links in the 1.3.1 and 1.3.2 sections by switching them from microsoft/testanywhere to microsoft/testfx.

Show a summary per file

File	Description
docs/Changelog-Platform.md	Adds missing 2.3.0 changelog entry and retargets broken historical compare links to the correct repository/tags.

Review details

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

[github-actions]

Note

🤖 Automated review by GitHub Copilot. Posted via a maintainer's GitHub token, so it appears under their account — the account owner did not write or approve this content personally. Generated by the Expert Code Review workflow. To request a follow-up action, reply by tagging @copilot directly.

✅ 22/22 dimensions clean — no findings.

Applicable dimensions reviewed:

• Documentation Accuracy (§17) — LGTM. The new changelog entry for #9641 is accurately worded, placed in correct chronological order (after #9549) within the [2.3.0] UNRELEASED → Added section, and follows the existing formatting conventions. The two testanywhere → testfx link fixes target tags that exist in microsoft/testfx. The remaining v1.4.x testanywhere links are correctly preserved per #9657 (those tags don't exist in testfx).
• Scope & PR Discipline (§21) — LGTM. Single concern (changelog maintenance), properly cross-references both issues (#9655, #9657), and the PR description clearly explains what was changed and why.

Remaining 20 dimensions — N/A (no code, tests, build infrastructure, PowerShell, or MSBuild files changed).