Fix formatting and standardize terms for comments

[sdwheeler]

PR Summary

Fix formatting and standardize terms for comments

• Fixes AB#361024
• Related to Add new about_Comments document #11646

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 589cbb4:

✅ Validation status: passed

File	Status	Preview URL	Details
reference/5.1/Microsoft.PowerShell.Core/About/about_Comment_Based_Help.md	✅Succeeded	View (powershell-5.1)
reference/5.1/Microsoft.PowerShell.Core/About/about_Data_Sections.md	✅Succeeded	View (powershell-5.1)
reference/5.1/Microsoft.PowerShell.Core/About/about_Split.md	✅Succeeded	View (powershell-5.1)
reference/5.1/Microsoft.PowerShell.Utility/ConvertFrom-StringData.md	✅Succeeded	View (powershell-5.1)
reference/5.1/Microsoft.PowerShell.Utility/Import-Csv.md	✅Succeeded	View (powershell-5.1)
reference/7.4/Microsoft.PowerShell.Core/About/about_Comment_Based_Help.md	✅Succeeded	View (powershell-7.4)
reference/7.4/Microsoft.PowerShell.Core/About/about_Data_Sections.md	✅Succeeded	View (powershell-7.4)
reference/7.4/Microsoft.PowerShell.Core/About/about_Split.md	✅Succeeded	View (powershell-7.4)
reference/7.4/Microsoft.PowerShell.Utility/ConvertFrom-StringData.md	✅Succeeded	View (powershell-7.4)
reference/7.4/Microsoft.PowerShell.Utility/Import-Csv.md	✅Succeeded	View (powershell-7.4)
reference/7.5/Microsoft.PowerShell.Core/About/about_Comment_Based_Help.md	✅Succeeded	View (powershell-7.5)
reference/7.5/Microsoft.PowerShell.Core/About/about_Data_Sections.md	✅Succeeded	View (powershell-7.5)
reference/7.5/Microsoft.PowerShell.Core/About/about_Split.md	✅Succeeded	View (powershell-7.5)
reference/7.5/Microsoft.PowerShell.Utility/ConvertFrom-StringData.md	✅Succeeded	View (powershell-7.5)
reference/7.5/Microsoft.PowerShell.Utility/Import-Csv.md	✅Succeeded	View (powershell-7.5)
reference/docs-conceptual/learn/ps101/09-functions.md	✅Succeeded	View (>=powershell-5.1)

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