(AzureCXP) fixes MicrosoftDocs/azure-docs#52907

Updated Register-AzureADConnectHealthADDSAgent -UserPrincipalName $USERNAME -Credential $myCreds command to Register-AzureADConnectHealthADDSAgent -Credential $myCreds. Since $myCreds contains both username and password, we don't need to pass the username by using -UserPrincipalName switch.

Author: AmanpreetSingh-MSFT

articles/active-directory/hybrid/how-to-connect-health-agent-install.md

@@ -265,7 +265,7 @@ $secpasswd = ConvertTo-SecureString "PASSWORD" -AsPlainText -Force
 $myCreds = New-Object System.Management.Automation.PSCredential ($userName, $secpasswd)
 import-module "C:\Program Files\Azure Ad Connect Health Adds Agent\PowerShell\AdHealthAdds"
  
-Register-AzureADConnectHealthADDSAgent -UserPrincipalName $USERNAME -Credential $myCreds
+Register-AzureADConnectHealthADDSAgent -Credential $myCreds
 
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