Update Get-MgServicePrincipalClaimMappingPolicyByRef.md

correcting the example command:
from: Get-MgServicePrincipalClaimMappingPolicy
to: Get-MgServicePrincipalClaimMappingPolicyByRef

Author: LeandroRRocha

microsoftgraph/graph-powershell-1.0/Microsoft.Graph.Applications/Get-MgServicePrincipalClaimMappingPolicyByRef.md

@@ -30,7 +30,7 @@ List the claimsMappingPolicy objects that are assigned to a servicePrincipal.
 ```powershell
 Import-Module Microsoft.Graph.Applications
 
-Get-MgServicePrincipalClaimMappingPolicy -ServicePrincipalId $servicePrincipalId
+Get-MgServicePrincipalClaimMappingPolicyByRef -ServicePrincipalId $servicePrincipalId
 ```
 This example shows how to use the Get-MgServicePrincipalClaimMappingPolicyByRef Cmdlet.