Docs: Listing object types has changed in v3

[jamesglaves]

EntraExporter/README.md

Line 104 in ce0d04c

(Get-Command Export-Entra | Select-Object -Expand Parameters)['Type'].Attributes.ValidValues

Super minor issue in documentation. This method no longer works in v3. Possible new way...

[Enum]::GetNames((Get-Command Export-Entra).Parameters['Type'].ParameterType.GetElementType())