Update audio installation doc page
MEMBER
Totally agree, the docs should be in sync with our code.

Indeed to avoid confusing users, I think we should have updated the docs at the same time as this PR:
- #5167
2023-02-02T07:31:06Z
https://github.com/huggingface/datasets/issues/5494#issuecomment-1413271173
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CONTRIBUTOR
@albertvillanova yeah sure I should have, but I forgot back then, sorry for that 😶
2023-02-02T10:13:36Z
https://github.com/huggingface/datasets/issues/5494#issuecomment-1413478956
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2023-02-02T10:27:33Z
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MEMBER
No, @polinaeterna, nothing to be sorry about.

My comment was for all of us datasets team, as a reminder: when making a PR, but also when reviewing some other's PR, we should not forget to update the corresponding docstring and doc pages. It is something we can improve if we help each other in reminding about it... :hugs: 
2023-02-02T13:11:57Z
https://github.com/huggingface/datasets/issues/5494#issuecomment-1413725150
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COLLABORATOR
@polinaeterna I think we can close this issue now as we no longer use `torchaudio` for decoding.
2023-03-02T15:27:29Z
https://github.com/huggingface/datasets/issues/5494#issuecomment-1452056653
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Our [installation documentation page](https://huggingface.co/docs/datasets/installation#audio) says that one can use Datasets for mp3 only with `torchaudio<0.12`. `torchaudio>0.12` is actually supported too but requires a specific version of ffmpeg which is not easily installed on all linux versions but there is a custom ubuntu repo for it, we have insctructions in the code: https://github.com/huggingface/datasets/blob/main/src/datasets/features/audio.py#L327 
So we should update the doc page. But first investigate [this issue](5488). 