Fixes #10480 - Update key binding examples

[sdwheeler]

PR Summary

Update key binding examples

• Fixes AB#166500
• Fixes Wrong example in the doc for Set-PSReadLineKeyHandler #10480

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 3446d91:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/5.1/PSReadLine/Set-PSReadLineKeyHandler.md	✅Succeeded	View (powershell-5.1)
reference/7.2/PSReadLine/Set-PSReadLineKeyHandler.md	✅Succeeded	View (powershell-7.2)
reference/7.3/PSReadLine/Set-PSReadLineKeyHandler.md	✅Succeeded	View (powershell-7.3)
reference/7.4/PSReadLine/Set-PSReadLineKeyHandler.md	✅Succeeded	View (powershell-7.4)

For more details, please refer to the build report.

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[daxian-dbw]

LGTM