Fixes #11797 - Update best practices for switch parameters

[sdwheeler]

PR Summary

Update best practices for switch parameters

• Fixes AB#399574
• Fixes Document the implications of passing an explicit value to a switch parameter #11797

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.

[learn-build-service-prod]

Learn Build status updates of commit ccf4c35:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/5.1/Microsoft.PowerShell.Core/About/about_Functions_Advanced_Parameters.md	✅Succeeded	View (powershell-5.1)
reference/7.4/Microsoft.PowerShell.Core/About/about_Functions_Advanced_Parameters.md	✅Succeeded	View (powershell-7.4)
reference/7.5/Microsoft.PowerShell.Core/About/about_Functions_Advanced_Parameters.md	✅Succeeded	View (powershell-7.5)
reference/7.6/Microsoft.PowerShell.Core/About/about_Functions_Advanced_Parameters.md	✅Succeeded	View (powershell-7.6)
reference/docs-conceptual/developer/cmdlet/types-of-cmdlet-parameters.md	✅Succeeded	View (>=powershell-5.1)

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