Fix duplicate sentence in about_Signing.md

[Mecken Swyter (MeckenS)]

PR Summary

Removed duplicate sentence about code signing certificates.

PR Checklist

• Descriptive Title: This PR's title is a synopsis of the changes it proposes.
• Summary: This PR's summary describes the scope and intent of the change.
• Contributor's Guide: I have read the contributor's guide.
• Style: This PR adheres to the style guide.

[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.

[Copilot]

Copilot review overview

🟢 Approval recommended

The only review comment is a minor formatting nit and does not block approval.

Review effort: Lite
Findings: 1

Open (1)

• Preserve Markdown wrapping when removing duplicate sentence · New

What changed in this PR

Removes a duplicated sentence from the PowerShell signing documentation.

Changes:

• Corrects duplicated certificate wording.
• Preserves the certificate trust explanation.

File	Description
reference/​7.6/​Microsoft.PowerShell.Core/​About/​about_Signing.md	Removes the duplicate wording.

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[learn-build-service-prod]

Learn Build status updates of commit d22fcef:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/7.6/Microsoft.PowerShell.Core/About/about_Signing.md	✅Succeeded	View (powershell-7.6)

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 700ca7e:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/5.1/Microsoft.PowerShell.Core/About/about_Signing.md	✅Succeeded	View (powershell-5.1)
reference/7.4/Microsoft.PowerShell.Core/About/about_Signing.md	✅Succeeded	View (powershell-7.4)
reference/7.5/Microsoft.PowerShell.Core/About/about_Signing.md	✅Succeeded	View (powershell-7.5)
reference/7.6/Microsoft.PowerShell.Core/About/about_Signing.md	✅Succeeded	View (powershell-7.6)
reference/7.7/Microsoft.PowerShell.Core/About/about_Signing.md	✅Succeeded	View (powershell-7.7)

For more details, please refer to the build report.