Change absolute path to relative in `raw.arrow`

[Bleach665]

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• This template is only for feature request.
• I have thoroughly reviewed the project documentation but couldn't find any relevant information that meets my needs.
• I have searched for existing issues, including closed ones, and found not discussion yet.
• I am using English to submit this issue to facilitate community communication.

1. Is this request related to a challenge you're experiencing? Tell us your story.

I created a dataset for training using the Gradio GUI. Now I can start training on this machine/OS. If the dataset is moved, training will fail due to absolute paths in raw.arrow

2. What is your suggested solution?

Use relative path

3. Additional context or comments

Use case:
I prepare dataset on Windows PC using convinient gradio GUI. After copy it to remote server without GUI and start training.

4. Can you help us with this feature?

• I am interested in contributing to this feature.