Fixes #11407 - Update processor info for macOS

[sdwheeler]

PR Summary

Update processor info for macOS

• Fixes AB#310194
• Fixes For Direct Download and Binary Archives please change the wording of "M1 processors" to "arm64 processors" #11407

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

[learn-build-service-prod]

Learn Build status updates of commit dd33578:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/docs-conceptual/install/Installing-PowerShell-on-macOS.md	✅Succeeded	View (>=powershell-5.1)

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