Improve dataset card: Add task category, library name, and update paper link

This PR improves the dataset card for `UroLlmEvalSet` by:
- Adding `question-answering` to the `task_categories` metadata, which better reflects the dataset's use in identifying and extracting specific information from text.
- Specifying `library_name: datasets` in the metadata, as the dataset is designed to be loaded with the `datasets` library.
- Updating the paper link in the "Citation and further information" section to point to the Hugging Face Papers page: https://huggingface.co/papers/2501.12106. The `url` field in the bibtex entry is also updated for consistency.

README.md

@@ -7,6 +7,7 @@ size_categories:
 task_categories:
 - text-classification
 - feature-extraction
+- question-answering
 pretty_name: UroLlmEvalSet
 dataset_info:
   features:
@@ -31,6 +32,7 @@ configs:
     path: data/eval-*
 tags:
 - medical
+library_name: datasets
 ---
 
 # UroLlmEvalSet
@@ -80,7 +82,7 @@ As this dataset is primarily intended for evaluation purposes, the license restr
 
 ## Citation and further information
 
-Further information about the dataset and about the benchmark can be found in the following [article](https://doi.org/10.1186/s13040-025-00463-8):
+Further information about the dataset and about the benchmark can be found in the following [article](https://huggingface.co/papers/2501.12106):
 
 ```bibtex
 @article{UroLlmEval_2025,
@@ -92,7 +94,7 @@ Further information about the dataset and about the benchmark can be found in th
     volume = {18},
     number = {1},
     doi = {10.1186/s13040-025-00463-8},
-    url = {https://doi.org/10.1186/s13040-025-00463-8}	
+    url = {https://huggingface.co/papers/2501.12106}	
 }
 ```