Update New-ADUser.md - Corrected misplaced bracket in -Name parameter

[drwhittle]

Corrected misplaced bracket in -Name parameter

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• 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.
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[learn-build-service-prod]

Learn Build status updates of commit 6d246ff:

✅ Validation status: passed

File	Status	Preview URL	Details
docset/winserver2022-ps/activedirectory/New-ADUser.md	✅Succeeded	View (WindowsServer2022-ps)

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