Fix dataset card arXiv citation

Correct the dataset card arXiv badge and BibTeX citation from arXiv:2505.19789 to arXiv:2604.07973.

README.md

@@ -25,7 +25,7 @@ configs:
 # EmbodiedNav-Bench
 
 [![GitHub](https://img.shields.io/badge/GitHub-Code-181717?logo=github&logoColor=white)](https://github.com/serenditipy-AC/Embodied-Navigation-Bench)
-[![arXiv](https://img.shields.io/badge/arXiv-2505.19789-b31b1b.svg?logo=arxiv&logoColor=white)](https://arxiv.org/abs/2505.19789)
+[![arXiv](https://img.shields.io/badge/arXiv-2604.07973-b31b1b.svg?logo=arxiv&logoColor=white)](https://arxiv.org/abs/2604.07973)
 
 EmbodiedNav-Bench is a goal-oriented embodied navigation benchmark for evaluating spatial action in urban 3D airspace. The dataset provides natural-language navigation goals, initial drone poses, target positions, and ground-truth 3D trajectories for embodied navigation evaluation.
 
@@ -82,13 +82,13 @@ This dataset is released under the CC BY 4.0 license.
 ## Citation
 
 ```bibtex
-@misc{liu2026rlbringvlageneralization,
-      title={What Can RL Bring to VLA Generalization? An Empirical Study},
-      author={Jijia Liu and Feng Gao and Bingwen Wei and Xinlei Chen and Qingmin Liao and Yi Wu and Chao Yu and Yu Wang},
+@misc{zhao2026farlargemultimodalmodels,
+      title={How Far Are Large Multimodal Models from Human-Level Spatial Action? A Benchmark for Goal-Oriented Embodied Navigation in Urban Airspace},
+      author={Baining Zhao and Ziyou Wang and Jianjie Fang and Zile Zhou and Yanggang Xu and Yatai Ji and Jiacheng Xu and Qian Zhang and Weichen Zhang and Chen Gao and Xinlei Chen},
       year={2026},
-      eprint={2505.19789},
+      eprint={2604.07973},
       archivePrefix={arXiv},
-      primaryClass={cs.LG},
-      url={https://arxiv.org/abs/2505.19789},
+      primaryClass={cs.AI},
+      url={https://arxiv.org/abs/2604.07973},
 }
 ```