Adding confirm description

[get-itips]

@trent-green Can we get information about -Reserved Parameter? Thank you
Related issue https://github.com/MicrosoftDocs/office-docs-powershell/issues/5595

[opbld30]

Docs Build status updates of commit ce6d983:

🕙 Full build: the average full build time is 17 min(s) 32 sec(s), this is based on the last 1000 build(s) for this repository.

[opbld31]

Docs Build status updates of commit ce6d983:

✅ Validation status: passed

File	Status	Preview URL	Details
sharepoint/sharepoint-ps/sharepoint-online/Start-SPOSiteRename.md	✅Succeeded	View (sharepoint-ps)

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.

[opbld32]

Docs Build status updates of commit 53bfde6:

🕙 Full build: the average full build time is 17 min(s) 40 sec(s), this is based on the last 1000 build(s) for this repository.

[opbld34]

Docs Build status updates of commit 53bfde6:

✅ Validation status: passed

File	Status	Preview URL	Details
sharepoint/sharepoint-ps/sharepoint-online/Start-SPOSiteRename.md	✅Succeeded	View (sharepoint-ps)

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.