update dataset collection link

README.md

@@ -11,7 +11,7 @@ configs:
 Molmo2-VideoTrack is a dataset of video point tracking annotations collected from human annotators across 16 video datasets.
 It can be used to fine-tune vision-language models for video object tracking via point trajectories.
 
-Molmo2-VideoTrack is part of the [Molmo2 dataset collection](https://huggingface.co/collections/allenai/molmo2) and was used to train the Molmo2 family of models.
+Molmo2-VideoTrack is part of the [Molmo2 dataset collection](https://huggingface.co/collections/allenai/molmo2-data) and was used to train the Molmo2 family of models.
 
 Quick links:
 - 📃 [Paper]()