docs: extend documentation

docs/docs/api/RetryHandler.md

@@ -46,6 +46,9 @@ It represents the retry state for a given request.
 - **dispatch** `(options: Dispatch.DispatchOptions, handlers: Dispatch.DispatchHandlers) => Promise<Dispatch.DispatchResponse>` (required) - Dispatch function to be called after every retry.
 - **handler** Extends [`Dispatch.DispatchHandlers`](Dispatcher.md#dispatcherdispatchoptions-handler) (required) - Handler function to be called after the request is successful or the retries are exhausted.
 
+>__Note__: The `RetryHandler` does not retry over stateful bodies (e.g. streams, AsyncIterable) as those, once consumed, are left in an state that cannot be reutilized. For these situations the `RetryHandler` will identify
+>the body as stateful and will not retry the request rejecting with the error `UND_ERR_REQ_RETRY`.
+
 Examples:
 
 ```js