Fix workflow message path

Author: mp-orkes

src/conductor/client/http/api/workflow_resource_api.py

@@ -3255,7 +3255,7 @@ def send_workflow_message_with_http_info(self, body, workflow_id, **kwargs):  #
         auth_settings = ['api_key']  # noqa: E501
 
         return self.api_client.call_api(
-            '/workflow/{workflowId}/message', 'POST',
+            '/workflow/{workflowId}/messages', 'POST',
             path_params,
             query_params,
             header_params,