Updated the environment in Deploy in ACI

the environment variable is not provided correctly and "tutorial-env" has to be replaced with "myenv" which is the environment variable defined right before this line:
inference_config = InferenceConfig(entry_script="score.py", environment=myenv)
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cc: @sdgilley

Author: ram-msft

articles/machine-learning/tutorial-deploy-models-with-aml.md

@@ -146,7 +146,7 @@ model = Model(ws, 'sklearn_mnist')
 
 
 myenv = Environment.get(workspace=ws, name="tutorial-env", version="1")
-inference_config = InferenceConfig(entry_script="score.py", environment=tutorial-env)
+inference_config = InferenceConfig(entry_script="score.py", environment=myenv)
 
 service = Model.deploy(workspace=ws, 
                        name='sklearn-mnist-svc3',