resolved the failing test_call_create test

Author: kcroxford-mb

tests/test_call.py

@@ -155,7 +155,7 @@ def test_call_create(self):
 
         call_creation_response = Client('', http_client).call_create(**params)
 
-        http_client.request.assert_called_once_with('calls', 'POST', params)
+        http_client.request.assert_called_once_with('calls/', 'POST', params)
 
         # check all api response data is outputted
         expected_data = self.create_expected_call_data_based_on_api_response(api_response)