Add metadata and update dataset card

Hi! I'm Niels, part of the community science team at Hugging Face.

This PR improves the dataset card by adding:
- YAML metadata for the license (`cc-by-4.0`) and task category (`other`).
- Standardized tags for easier discovery.
- Ensuring the paper and GitHub repository are clearly linked.

The existing `dataset_info` and `configs` metadata have been preserved.

README.md

@@ -1,4 +1,11 @@
 ---
+license: cc-by-4.0
+task_categories:
+- other
+tags:
+- survival-analysis
+- causal-inference
+- treatment-effect-estimation
 dataset_info:
 - config_name: actgHC
   features:
@@ -1809,11 +1816,9 @@ configs:
     path: twin_splits/test_9-*
 ---
 
-
-
 # SurvHTE-Bench: A Benchmark for Heterogeneous Treatment Effect Estimation in Survival Analysis
 
-**Paper:** [ICLR 2026 — SurvHTE-Bench: A Benchmark for Heterogeneous Treatment Effect Estimation in Survival Analysis](https://arxiv.org/abs/2603.05483)
+**Paper:** [ICLR 2026 — SurvHTE-Bench: A Benchmark for Heterogeneous Treatment Effect Estimation in Survival Analysis](https://huggingface.co/papers/2603.05483)
 
 **GitHub:** https://github.com/Shahriarnz14/SurvHTE-Bench
 
@@ -2071,4 +2076,4 @@ If you use SurvHTE-Bench in your research, please cite:
 
 ## License
 
-This dataset is released under the **Creative Commons Attribution 4.0 International (CC BY 4.0)** license.
+This dataset is released under the **Creative Commons Attribution 4.0 International (CC BY 4.0)** license.