Add pipeline tag and library_name, link to code

This PR ensures the model can be found at https://huggingface.co/models?pipeline_tag=video-question-answering&sort=trending,
and also adds the library name tag, ensuring the proper "how to use" button appears on the top right.

README.md

@@ -1,5 +1,7 @@
 ---
 license: apache-2.0
+pipeline_tag: video-question-answering
+library_name: transformers
 ---
 
 # VideoHallu: Evaluating and Mitigating Multi-modal Hallucinations for Synthetic Videos
@@ -8,7 +10,7 @@ license: apache-2.0
 
 [[📖 Paper](https://arxiv.org/abs/2505.01481)] [[🤗 Dataset](https://huggingface.co/datasets/zli12321/VideoHalluB)][[🌍Website](https://smashedpython.github.io/videohallu.github.io/)]
 
-
+Code: https://github.com/zli12321/VideoHallu
 
 ## 👀 About VideoHallu
 
@@ -94,4 +96,4 @@ If you find our work helpful for your research, please consider citing our work.
       primaryClass={cs.CV},
       url={https://arxiv.org/abs/2406.10900}, 
 }
-```
+```