Adding some details for HistorySaveStyle

[StevenBucher98]

PR Summary

This change is to give better clarification for the use of HistorySaveStyle for Set-PSReadLineOption, addresses: PowerShell/PSReadLine#3785

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 0976c43:

✅ Validation status: passed

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

For more details, please refer to the build report.

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[github-actions]

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[learn-build-service-prod]

Learn Build status updates of commit 5cdaafd:

✅ Validation status: passed

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

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod]

Learn Build status updates of commit 07944bc:

✅ Validation status: passed

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

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel