Update tutorial-pipeline-python-sdk.md

Added missing code to generate train.py file.

Author: jorgeper

articles/machine-learning/tutorial-pipeline-python-sdk.md

@@ -250,6 +250,10 @@ Create the directory for this component:
 
 [!Notebook-python[] (~/azureml-examples-main/tutorials/e2e-ds-experience/e2e-ml-workflow.ipynb?name=train_src_dir)]
 
+Create the training script in the directory:
+
+[!Notebook-python[] (~/azureml-examples-main/tutorials/e2e-ds-experience/e2e-ml-workflow.ipynb?name=train.py)]
+
 As you can see in this training script, once the model is trained, the model file is saved and registered to the workspace. Now you can use the registered model in inferencing endpoints.