Add M³Diff training dataset card

README.md

@@ -159,8 +159,8 @@ If this training set or M³Diff is useful in your research, please cite:
 
 ```bibtex
 @inproceedings{liu2025omnidiff,
-  title={OmniDiff: A Comprehe,nsive Benchmark for Fine-grained Image Difference Captioning},
-  author={Liu, Yuan and Hou, Saihui and Hou, Saijie and Du, Jiabao and Meng, Shibei and Huang Yongzhen},
+  title={OmniDiff: A Comprehensive Benchmark for Fine-grained Image Difference Captioning},
+  author={Liu, Yuan and Hou, Saihui and Hou, Saijie and Du, Jiabao and Meng, Shibei and Huang, Yongzhen},
   booktitle={Proceedings of the IEEE/CVF International Conference on Computer Vision},
   pages={21440--21449},
   year={2025}