Small doc fixes
NONE
The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_3860). All of your documentation changes will be reflected on that endpoint.
2022-03-08T13:00:50Z
https://github.com/huggingface/datasets/pull/3860#issuecomment-1061751673
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2022-03-08T13:00:50Z
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There are still some `.. code-block:: python` (e.g. see [this](https://huggingface.co/docs/datasets/master/en/package_reference/main_classes#datasets.Dataset.align_labels_with_mapping)) directives in our codebase, so maybe we can remove those as well as part of this PR.
2022-03-08T13:06:51Z
https://github.com/huggingface/datasets/pull/3860#issuecomment-1061756712
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