Add task category

This PR adds the `table-question-answering` task category to the dataset card metadata, improving its discoverability on the Hugging Face Hub.

README.md

@@ -1,5 +1,7 @@
 ---
 license: cc-by-nc-sa-4.0
+task_categories:
+- table-question-answering
 ---
 
 # DP-Bench: A Benchmark for Evaluating Data Product Creation Systems
@@ -21,4 +23,4 @@ Title: DP-Bench: A Benchmark for Evaluating Data Product Creation Systems
 Authors: Faisal Chowdhury, Sola Shirai, Sarthak Dash, Nandana Mihindukulasooriya, Horst Samulowitz
 ```
 
-Paper url: [https://arxiv.org/pdf/2512.15798](https://arxiv.org/pdf/2512.15798)
+Paper url: [https://arxiv.org/pdf/2512.15798](https://arxiv.org/pdf/2512.15798)