Documentation: from v 6.7.1 Correct samples for API deleteFiles

[orazionelson]

As shown in the thread:
https://groups.google.com/g/dataverse-community/c/9vlR1dTX3oE
there is an typo in the example provided for the deleteFiles API
and this:

-d '{"fileIds": [1, 2, 3]}'
should become:

-d '[1, 2, 3]'

[pdurbin]

@orazionelson thanks for opening this issue!

Here's the problematic part of the API Guide:

https://guides.dataverse.org/en/6.8/api/native-api.html#delete-files-from-a-dataset

The source is here (as of 6.8): https://github.com/IQSS/dataverse/blob/v6.8/doc/sphinx-guides/source/api/native-api.rst?plain=1#L4029

Here's how to update the guides: https://guides.dataverse.org/en/6.8/contributor/documentation.html

(And a slightly updated version from #11831 - https://dataverse-guide--11831.org.readthedocs.build/en/11831/contributor/documentation.html )

Pull requests are welcome! If anyone reading this has trouble, please feel free to ask in #docs at https://dataverse.zulipchat.com !