Removing -ShowDeatils parameter from Get-SPOTenant documentation

[prgundel]

Updating the Get-SPOTenant documentation

• remove [ShowDetails] parameter from the cmdlet because SharePoint tenant settings feature is being removed from PS endpoint

[learn-build-service-prod]

Learn Build status updates of commit e6551e2:

✅ Validation status: passed

File	Status	Preview URL	Details
sharepoint/sharepoint-ps/Microsoft.Online.SharePoint.PowerShell/Get-SPOTenant.md	✅Succeeded	View (sharepoint-ps)

For more details, please refer to the build report.