Update sample output for SqlServerDataset

Author: Samantha-Yu

articles/data-factory/tutorial-hybrid-copy-powershell.md

@@ -465,7 +465,7 @@ In this step, you define a dataset that represents data in the SQL Server databa
     DatasetName       : SqlServerDataset
     ResourceGroupName : <resourceGroupName>
     DataFactoryName   : <dataFactoryName>
-    Structure         : {"name": "ID" "type": "String", "name": "FirstName" "type": "String", "name": "LastName" "type": "String"}
+    Structure         : 
     Properties        : Microsoft.Azure.Management.DataFactory.Models.SqlServerTableDataset
     ```