Update use-acr-repository.md with info about the latest stable PSResourceGet version

[SamErde]

PR Summary

These docs still refer to the pre-release version of the Microsoft.PowerShell.PSResourceGet module. This updates those references to the stable 1.1.1 release.

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 contributors guide.
• Style: This PR adheres to the style guide.

[Copilot]

Pull Request Overview

This PR updates the documentation for using ACR repositories with PSResourceGet by referencing the stable 1.1.1 release rather than the preview version.

• Updated version references in the introductory text and prerequisites.
• Removed pre-release flags from the installation command examples.

[learn-build-service-prod]

Learn Build status updates of commit c7a582f:

✅ Validation status: passed

File	Status	Preview URL	Details
powershell-gallery/docs-conceptual/powershellget/how-to/use-acr-repository.md	✅Succeeded	View (>=powershellget-1.x)

For more details, please refer to the build report.

[github-actions]

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[sdwheeler]

@SamErde thanks for the update.