Add link to paper

This PR ensures the data can be found at https://huggingface.co/papers/2505.09263.

README.md

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-license: mit
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+license: mit
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+This repository contains the data described in [Few-Shot Anomaly-Driven Generation for Anomaly Classification and Segmentation](https://huggingface.co/papers/2505.09263).
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+Code: https://github.com/gaobb/AnoGen