[synapse] Fix AccessControl LIVE sample test (#18606)

Author: chamons

sdk/synapse/Azure.Analytics.Synapse.AccessControl/README.md

@@ -99,13 +99,13 @@ First, you need to the determine the ID of the role you wish to assign, along wi
 
 ```C# Snippet:PrepCreateRoleAssignment
 Response<IReadOnlyList<SynapseRoleDefinition>> roles = definitionsClient.ListRoleDefinitions();
-SynapseRoleDefinition role = roles.Value.Single(role => role.Name == "Workspace Admin");
+SynapseRoleDefinition role = roles.Value.Single(role => role.Name == "Synapse Administrator");
 Guid roleId = role.Id.Value;
 
 string assignedScope = "workspaces/<my-workspace-name>";
 
 // Replace the string below with the ID you'd like to assign the role.
-Guid principalId = Guid.Parse("<my-principal-id>");
+Guid principalId = /*<my-principal-id>"*/ Guid.NewGuid();
 
 // Replace the string below with the ID of the assignment you'd like to use.
 string assignmentId = "<my-assignment-id>";

sdk/synapse/Azure.Analytics.Synapse.AccessControl/samples/Sample1_HelloWorld.md

@@ -20,13 +20,13 @@ First, you need to the determine the ID of the role you wish to assign, along wi
 
 ```C# Snippet:PrepCreateRoleAssignment
 Response<IReadOnlyList<SynapseRoleDefinition>> roles = definitionsClient.ListRoleDefinitions();
-SynapseRoleDefinition role = roles.Value.Single(role => role.Name == "Workspace Admin");
+SynapseRoleDefinition role = roles.Value.Single(role => role.Name == "Synapse Administrator");
 Guid roleId = role.Id.Value;
 
 string assignedScope = "workspaces/<my-workspace-name>";
 
 // Replace the string below with the ID you'd like to assign the role.
-Guid principalId = Guid.Parse("<my-principal-id>");
+Guid principalId = /*<my-principal-id>"*/ Guid.NewGuid();
 
 // Replace the string below with the ID of the assignment you'd like to use.
 string assignmentId = "<my-assignment-id>";

sdk/synapse/Azure.Analytics.Synapse.AccessControl/tests/samples/Sample1_HelloWorld.cs

@@ -33,15 +33,14 @@ public void AddAndRemoveRoleAssignmentSync()
 
             #region Snippet:PrepCreateRoleAssignment
             Response<IReadOnlyList<SynapseRoleDefinition>> roles = definitionsClient.ListRoleDefinitions();
-            SynapseRoleDefinition role = roles.Value.Single(role => role.Name == "Workspace Admin");
+            SynapseRoleDefinition role = roles.Value.Single(role => role.Name == "Synapse Administrator");
             Guid roleId = role.Id.Value;
 
             string assignedScope = "workspaces/<my-workspace-name>";
             /*@@*/assignedScope = "workspaces/workspacechhamosynapse";
 
             // Replace the string below with the ID you'd like to assign the role.
-            Guid principalId = Guid.Parse("<my-principal-id>");
-            /*@@*/principalId = Guid.NewGuid();
+            Guid principalId = /*<my-principal-id>"*/ Guid.NewGuid();
 
             // Replace the string below with the ID of the assignment you'd like to use.
             string assignmentId = "<my-assignment-id>";