GitLab

Summary:
Currently, the documentation page for `torchaudio.models` have separate sections for model definitions and factory functions.

The relationships between models and factory functions are not immediately clear.

This commit moves the list of factory functions to the list of models.

After:
 - https://output.circle-artifacts.com/output/job/242a9521-7460-4043-895b-9995bf5093b5/artifacts/0/docs/generated/torchaudio.models.Wav2Vec2Model.html

<img width="1171" alt="Screen Shot 2022-12-08 at 8 41 03 PM" src="https://user-images.githubusercontent.com/855818/206603743-74a6e368-c3cf-4b87-b854-518a95893f06.png">

Pull Request resolved: https://github.com/pytorch/audio/pull/2902

Reviewed By: carolineechen

Differential Revision: D41897800

Pulled By: mthrok

fbshipit-source-id: a3c01d28d80e755596a9bc37c951960eb84870b9

Summary:
* Introduce the mini-index at `torchaudio.models` page.

https://output.circle-artifacts.com/output/job/25e59810-3866-4ece-b1b7-8a10c7a2286d/artifacts/0/docs/models.html

<img width="1042" alt="Screen Shot 2022-09-20 at 1 20 50 PM" src="https://user-images.githubusercontent.com/855818/191166816-83314ad1-8b67-475b-aa10-d4cc59126295.png">

<img width="1048" alt="Screen Shot 2022-09-20 at 1 20 58 PM" src="https://user-images.githubusercontent.com/855818/191166829-1ceb65e0-9506-4328-9a2f-8b75b4e54404.png">

Pull Request resolved: https://github.com/pytorch/audio/pull/2690

Reviewed By: carolineechen

Differential Revision: D39654948

Pulled By: mthrok

fbshipit-source-id: 703d1526617596f647c85a7148f41ca55fffdbc8