Change unordered list to bullets, added second level for readability

Author: garycentric

articles/event-hubs/event-hubs-messaging-exceptions.md

@@ -22,12 +22,34 @@ This section lists the .NET exceptions generated by .NET Framework APIs.
 
 ## Exception categories
 
-The Event Hubs .NET APIs generate exceptions that can fall into the following categories, along with the associated action you can take to try to fix them.
-
-1. User coding error: [System.ArgumentException](https://msdn.microsoft.com/library/system.argumentexception.aspx), [System.InvalidOperationException](https://msdn.microsoft.com/library/system.invalidoperationexception.aspx), [System.OperationCanceledException](https://msdn.microsoft.com/library/system.operationcanceledexception.aspx), [System.Runtime.Serialization.SerializationException](https://msdn.microsoft.com/library/system.runtime.serialization.serializationexception.aspx). General action: try to fix the code before proceeding.
-2. Setup/configuration error: [Microsoft.ServiceBus.Messaging.MessagingEntityNotFoundException](/dotnet/api/microsoft.servicebus.messaging.messagingentitynotfoundexception), [Microsoft.Azure.EventHubs.MessagingEntityNotFoundException](/dotnet/api/microsoft.azure.eventhubs.messagingentitynotfoundexception), [System.UnauthorizedAccessException](https://msdn.microsoft.com/library/system.unauthorizedaccessexception.aspx). General action: review your configuration and change if necessary.
-3. Transient exceptions: [Microsoft.ServiceBus.Messaging.MessagingException](/dotnet/api/microsoft.servicebus.messaging.messagingexception), [Microsoft.ServiceBus.Messaging.ServerBusyException](#serverbusyexception), [Microsoft.Azure.EventHubs.ServerBusyException](#serverbusyexception), [Microsoft.ServiceBus.Messaging.MessagingCommunicationException](/dotnet/api/microsoft.servicebus.messaging.messagingcommunicationexception). General action: retry the operation or notify users.
-4. Other exceptions: [System.Transactions.TransactionException](https://msdn.microsoft.com/library/system.transactions.transactionexception.aspx), [System.TimeoutException](#timeoutexception), [Microsoft.ServiceBus.Messaging.MessageLockLostException](/dotnet/api/microsoft.servicebus.messaging.messagelocklostexception), [Microsoft.ServiceBus.Messaging.SessionLockLostException](/dotnet/api/microsoft.servicebus.messaging.sessionlocklostexception). General action: specific to the exception type; refer to the table in the following section. 
+The Event Hubs .NET APIs generate exceptions that can fall into the following categories, along with the associated action you can take to try to fix them:
+
+ - User coding error: 
+   - [System.ArgumentException](https://msdn.microsoft.com/library/system.argumentexception.aspx)
+   - [System.InvalidOperationException](https://msdn.microsoft.com/library/system.invalidoperationexception.aspx)
+   - [System.OperationCanceledException](https://msdn.microsoft.com/library/system.operationcanceledexception.aspx)
+   - [System.Runtime.Serialization.SerializationException](https://msdn.microsoft.com/library/system.runtime.serialization.serializationexception.aspx)
+   General action: Try to fix the code before proceeding.
+ 
+ - Setup/configuration error: 
+   - [Microsoft.ServiceBus.Messaging.MessagingEntityNotFoundException](/dotnet/api/microsoft.servicebus.messaging.messagingentitynotfoundexception)
+   - [Microsoft.Azure.EventHubs.MessagingEntityNotFoundException](/dotnet/api/microsoft.azure.eventhubs.messagingentitynotfoundexception)
+   - [System.UnauthorizedAccessException](https://msdn.microsoft.com/library/system.unauthorizedaccessexception.aspx)
+   General action: Review your configuration and change if necessary.
+   
+ - Transient exceptions: 
+   - [Microsoft.ServiceBus.Messaging.MessagingException](/dotnet/api/microsoft.servicebus.messaging.messagingexception)
+   - [Microsoft.ServiceBus.Messaging.ServerBusyException](#serverbusyexception)
+   - [Microsoft.Azure.EventHubs.ServerBusyException](#serverbusyexception)
+   - [Microsoft.ServiceBus.Messaging.MessagingCommunicationException](/dotnet/api/microsoft.servicebus.messaging.messagingcommunicationexception)
+   General action: Retry the operation or notify users.
+ 
+ - Other exceptions: 
+   - [System.Transactions.TransactionException](https://msdn.microsoft.com/library/system.transactions.transactionexception.aspx)
+   - [System.TimeoutException](#timeoutexception)
+   - [Microsoft.ServiceBus.Messaging.MessageLockLostException](/dotnet/api/microsoft.servicebus.messaging.messagelocklostexception)
+   - [Microsoft.ServiceBus.Messaging.SessionLockLostException](/dotnet/api/microsoft.servicebus.messaging.sessionlocklostexception)
+   General action: Specific to the exception type; refer to the table in the following section. 
 
 ## Exception types
 The following table lists messaging exception types, and their causes, and notes suggested action you can take.