mltable 'coming soon' clarification on API reference page

Is `mltable` still development? I'm unable to install it (https://github.com/Azure/azureml-examples/issues/1653).

I found this:

mltable (coming soon) - used for Automated ML and Parallel Jobs. This type defines tabular data - for example: schema and subsetting transforms.

from here: https://github.com/Azure/azureml-examples/tree/32cba55f2814c85eee15d990e9ac0ba1a47f96dd/sdk/assets/data#understand-uri_file-and-uri_folder-types

If it's still in development and not yet supported, it would be good to clarify this in the API reference.

---
#### Document Details

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* ID: 49a26b6f-8b6a-11eb-7aeb-bc0ae99cb258
* Version Independent ID: b03d63b7-5c98-07e8-e601-7edc63e9c621
* Content: [mltable package - Azure Machine Learning Python](https://learn.microsoft.com/en-us/python/api/mltable/?view=azure-ml-py#feedback)
* Content Source: [AzureML-Docset/stable/docs-ref-autogen/mltable/index.yml](https://github.com/MicrosoftDocs/MachineLearning-Python-pr/blob/live/AzureML-Docset/stable/docs-ref-autogen/mltable/index.yml)
* Service: **machine-learning**
* Sub-service: **core**
* GitHub Login: @DebFro
* Microsoft Alias: **debfro**

從 AzureML-Docset/stable/docs-ref-autogen/mltable/index.yml 開始，並查看連結的安裝 issue 1653，以確認 mltable 的目前狀態。更新 API 參考，使其可用性或開發狀態明確無歧義，然後驗證轉譯後的 mltable 套件頁面是否反映了這項說明。

由索引模型根據 Issue 內容生成。