Included the failing test, with self.assertRaises

Reworded some of the comments

tests/workflow/test_workflow_call_activity_end_event.py

@@ -8,14 +8,16 @@ class TestCallActivityEndEvent(BaseTest):
         workflow_api = self.get_workflow_api(workflow)
         first_task = workflow_api.next_task
 
-        # This test looks at Element Documentation
+        # The tests looks at Element Documentation
         # The actual end event has 'Main Workflow'
         # The call activity has 'Call Event'
 
-        # This should fail, but it passes
-        #self.assertIn('Call Event', first_task.documentation)
+        # Make sure we have the correct end event,
+        # and not the end event from the call activity
 
-        # This should pass, but it fails
+        # This should fail
+        with self.assertRaises(AssertionError):
+            self.assertIn('Call Event', first_task.documentation)
+
+        # This should pass
         self.assertIn('Main Workflow', first_task.documentation)
-
-        print('call_activity_end_event')