Add link to paper and code

This PR ensures that the dataset can be found at https://huggingface.co/papers/2506.00482.
It also adds a link to the code repository.

README.md

@@ -1,4 +1,10 @@
 ---
 task_categories:
 - text-generation
----
+tags:
+- benchmark
+---
+
+This repository contains the dataset used in the paper [BenchHub: A Unified Benchmark Suite for Holistic and Customizable LLM Evaluation](https://huggingface.co/papers/2506.00482).
+
+Code: https://github.com/rladmstn1714/BenchHub