Fix Issues with Colab Notebook in 'Annotate text data using Active Learning with Cleanlab'

[sergiopaniego]

What does this PR do?

Fixes #138.

This PR addresses the three minor issues pointed out:

1. Updated the datasets package version. Tested and confirmed it works correctly.
2. Changed the dataset loading method to load directly as a Pandas DataFrame, following the approach used in the tutorial and Colab example.
3. Updated the download links to ensure correct file retrieval.

Who can review?

@merveenoyan and @stevhliu.

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[merveenoyan]

@sergiopaniego very sorry for delayed response, I was off. I think we can merge