Update README to clarify message durability issue [skip ci]

Clarify message durability limitations in README.

Author: Gsantomaggio

README.md

@@ -16,7 +16,8 @@ Inside the [examples](./examples) folder you can find a set of examples that sho
 [Client Guide](https://www.rabbitmq.com/client-libraries/amqp-client-libraries) select the python section.
 
 ### Client Limitations
-It is not possible to set message durable to False because of this [issue](https://github.com/rabbitmq/rabbitmq-amqp-python-client/issues/83)
+It is not possible to set message durability to `False` for classic queues because of this [issue](https://github.com/rabbitmq/rabbitmq-amqp-python-client/issues/83). <br/> 
+Quorum and Stream are always durable. 
 
 
 ### Build