Improve model card: update pipeline tag and add paper link

This PR updates the model card by:

- changing the `pipeline_tag` to `robotics`, ensuring people find your model at https://huggingface.co/models?pipeline_tag=robotics.
- adding a link to the paper's Hugging Face papers URL.

README.md

@@ -1,7 +1,7 @@
 ---
 library_name: transformers
-pipeline_tag: image-text-to-text
 license: mit
+pipeline_tag: robotics
 ---
 
 # Model Card for Magma-8B
@@ -180,7 +180,8 @@ image = image.convert("RGB")
 
 convs = [
     {"role": "system", "content": "You are agent that can see, talk and act."},
-    {"role": "user", "content": "<image_start><image><image_end>\nWhat is in this image?"},
+    {"role": "user", "content": "<image_start><image><image_end>
+What is in this image?"},
 ]
 prompt = processor.tokenizer.apply_chat_template(convs, tokenize=False, add_generation_prompt=True)
 inputs = processor(images=[image], texts=prompt, return_tensors="pt")
@@ -222,7 +223,7 @@ Our training data consists of:
 
 * Robotics Manipulation Data: [Open-X-Embodiment](https://robotics-transformer-x.github.io/).
 
-* UI Grounding Data: [SeeClick](https://github.com/njucckevin/SeeClick).
+* UI Grounding Data: [SeeClick](https://github.com/njucckevin/SeeClick).\
 
 * UI Navigation Data: [Mind2web](https://osu-nlp-group.github.io/Mind2Web/) and [AITW](https://github.com/google-research/google-research/tree/master/android_in_the_wild).
 
@@ -473,14 +474,13 @@ For the robotic manipulation task, some mitigation strategies to use for human s
 <!-- If there is a paper or blog post introducing the model, the APA and Bibtex information for that should go in this section. -->
 
 ```bibtex
-@misc{yang2025magmafoundationmodelmultimodal,
-      title={Magma: A Foundation Model for Multimodal AI Agents}, 
-      author={Jianwei Yang and Reuben Tan and Qianhui Wu and Ruijie Zheng and Baolin Peng and Yongyuan Liang and Yu Gu and Mu Cai and Seonghyeon Ye and Joel Jang and Yuquan Deng and Lars Liden and Jianfeng Gao},
-      year={2025},
-      eprint={2502.13130},
-      archivePrefix={arXiv},
-      primaryClass={cs.CV},
-      url={https://arxiv.org/abs/2502.13130}, 
+@misc{yang2025magmafoundationmodelmultimodal,\
+      title={Magma: A Foundation Model for Multimodal AI Agents}, \
+      author={Jianwei Yang and Reuben Tan and Qianhui Wu and Ruijie Zheng and Baolin Peng and Yongyuan Liang and Yu Gu and Mu Cai and Seonghyeon Ye and Joel Jang and Yuquan Deng and Lars Liden and Jianfeng Gao},\
+      year={2025},\
+      eprint={2502.13130},\
+      archivePrefix={arXiv},\
+      url={https://arxiv.org/abs/2502.13130}, \
 }
 ```
 <!-- {{ citation_bibtex | default("[More Information Needed]", true)}} -->