[FIX] Multimodal example not working on colab

[kylediaz]

Description of changes

In your docs, you link to a ipynb demo in Google Colab. This demo won't work in Colab unless you pip install a few packages.

Also, when loading the dataset, you try to load a dataset called coco but it looks like the only one available is called default.

dataset = load_dataset(path="detection-datasets/coco", name="default"...)

I'm not sure how this error started occurring because this dataset hasn't changed since this example was created. Either way, it at least works in Colab now.

Test plan

Ran it in Colab with a fresh kernel

[github-actions]

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