Fix WindowsPackageType value for packaged publish

[jfversluis]

Summary

• Replace invalid WindowsPackageType value Package with MSIX in the Windows packaged publish CLI sample
• Clarify the supported WindowsPackageType values and link to Windows packaging docs
• Update ms.date

Fixes #3343

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Internal previews

📄 File	🔗 Preview link
docs/windows/deployment/publish-cli.md	docs/windows/deployment/publish-cli

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

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Information: PoliCheck | Severity Guidance | Term
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[learn-build-service-prod]

Learn Build status updates of commit b052571:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/windows/deployment/publish-cli.md	✅Succeeded	View (>=net-maui-8.0)

For more details, please refer to the build report.

[learn-build-service-prod]

PoliCheck Scan Report

The following report lists PoliCheck issues in PR files. Before you merge the PR, you must fix all severity-1 and severity-2 issues. The AI Review Details column lists suggestions for either removing or replacing the terms. If you find a false positive result, mention it in a PR comment and include this text: #policheck-false-positive. This feedback helps reduce false positives in future scans.

✅ No issues found

More information about PoliCheck

Information: PoliCheck | Severity Guidance | Term
For any questions: Try searching the learn.microsoft.com contributor guides or post your question in the Learn support channel.

[learn-build-service-prod]

Learn Build status updates of commit 55ab18b:

✅ Validation status: passed

File	Status	Preview URL	Details
docs/windows/deployment/publish-cli.md	✅Succeeded	View (>=net-maui-8.0)

For more details, please refer to the build report.