docs update

503 changed to int as per docs

docs/streaming.md

@@ -202,6 +202,13 @@ When used in production it is recommended not to start the stream in a new threa
 
 Please see the example [examplestreamingerrhandling.py](https://github.com/liampauling/betfair/blob/master/examples/examplestreamingerrhandling.py)
 
+Sometimes betfair will suspend the stream via the use of a status=503 update, more info [here](https://docs.developer.betfair.com/display/1smk3cen4v3lu3yomq5qye0ni/Exchange+Stream+API#ExchangeStreamAPI-StreamAPIStatus-latency), when the stream is receiving this update the `listener.status` will be updated:
+
+```python
+>>> listener.status
+503
+```
+
 ### Listener
 
 You can create a custom listener by overriding the listener class:

tests/resources/streaming_503.json

@@ -1 +1 @@
-{"op":"mcm","id":2,"status":"503"}
+{"op":"mcm","id":2,"status":503}

tests/unit/test_listener.py

@@ -165,7 +165,7 @@ def test_on_data_status_error(
         mock_error_handler.assert_called_with(
             mock_response.json(), mock_response.json().get("id")
         )
-        self.assertEqual(self.stream_listener.status, "503")
+        self.assertEqual(self.stream_listener.status, 503)
 
     def test_on_connection(self):
         self.stream_listener._on_connection({"connectionId": 1234}, 1)