Librarian Bot: Add dpo tag

This pull request aims to enrich the metadata of your dataset by adding the `dpo` tag to your dataset. This tag is intended to make it easier to find datasets suitable for Direct Preference Optimization (DPO).

How did we find this information? We found this information based on the column names of your dataset. We found the following columns in your dataset: "chosen", "rejected", and "prompt". Based on these column names, we believe that your dataset is suitable for DPO tasks.

**Why add this?** Enhancing your model's metadata in this way:

- Makes it easier for users to find your dataset.
- Helps users understand the intended use case of your dataset.

This PR comes courtesy of [Librarian Bot](https://huggingface.co/librarian-bot). If you have any feedback, queries, or need assistance, please don't hesitate to reach out to [@davanstrien](https://huggingface.co/davanstrien).

README.md

@@ -45,6 +45,8 @@ dataset_info:
     num_examples: 59954
   download_size: 429569084
   dataset_size: 4845759863
+tags:
+- dpo
 ---
 # Dataset Card for "ultrafeedback_llama3_label"