Cleaned up parameter descriptions

[davidchesnut]

Made fixes and other editorial changes to parameter descriptions for the hub site cmdlets.

[opbld14]

❌ Validation status: errors

File	Status	Preview URL	Details
	❌Error		Details

• [Error] An exception occurred during the build process. Please check the raw log and retry building your content again. If the issue persists, please open a ticket in http://SiteHelp and include the URL of publishing report.

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.

[kenwith]

@davidchesnut - not sure why the build failed.. maybe try to resubmit and see if it was a fluke?

[kenwith]

@davidchesnut - looks like some validation errors..

[opbld19]

✅ Validation status: passed

File	Status	Preview URL	Details
sharepoint/sharepoint-ps/sharepoint-online/Add-SPOHubSiteAssociation.md	✅Succeeded	View (sharepoint-ps)
sharepoint/sharepoint-ps/sharepoint-online/Get-SPOHubSite.md	✅Succeeded	View (sharepoint-ps)
sharepoint/sharepoint-ps/sharepoint-online/Grant-SPOHubSiteRights.md	✅Succeeded	View (sharepoint-ps)
sharepoint/sharepoint-ps/sharepoint-online/Register-SPOHubSite.md	✅Succeeded	View (sharepoint-ps)
sharepoint/sharepoint-ps/sharepoint-online/Remove-SPOHubSiteAssociation.md	✅Succeeded	View (sharepoint-ps)
sharepoint/sharepoint-ps/sharepoint-online/Revoke-SPOHubSiteRights.md	✅Succeeded	View (sharepoint-ps)
sharepoint/sharepoint-ps/sharepoint-online/Set-SPOHubSite.md	✅Succeeded	View (sharepoint-ps)
sharepoint/sharepoint-ps/sharepoint-online/Unregister-SPOHubSite.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.