Link to DataSets is broken

The article mentions that DataReference is no longer the recommended approach and instead DataSets should be used, but the link to learn more about DataSets takes me to a 404 page (see pic below)

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#### Document Details

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* ID: 8b57ef22-d9c6-3066-9489-a368b354357a
* Version Independent ID: cffee3ba-8d7a-ce13-4975-825d8195081b
* Content: [azureml.data.data_reference.DataReference class - Azure Machine Learning Python](https://docs.microsoft.com/en-us/python/api/azureml-core/azureml.data.data_reference.datareference?preserve-view=true&view=azure-ml-py#feedback)
* Content Source: [AzureML-Docset/stable/docs-ref-autogen/azureml-core/azureml.data.data_reference.DataReference.yml](https://github.com/MicrosoftDocs/MachineLearning-Python-pr/blob/live/AzureML-Docset/stable/docs-ref-autogen/azureml-core/azureml.data.data_reference.DataReference.yml)
* Service: **machine-learning**
* Sub-service: **core**
* GitHub Login: @DebFro
* Microsoft Alias: **debfro**

Abra AzureML-Docset/stable/docs-ref-autogen/azureml-core/azureml.data.data_reference.DataReference.yml e localize o link DataSets descrito na issue. Verifique o destino vinculado e atualize a referência da documentação para que ela não retorne mais 404; em seguida, verifique se a página renderizada de DataReference aponta para a documentação correta de DataSets.

Escrita pelo modelo de indexação a partir do texto da issue.