Add task category, tags, and link to project page

This PR adds the `robotics` task category and relevant tags to the dataset card. It also adds a link to the project page.

README.md

@@ -1,5 +1,14 @@
 ---
 license: apache-2.0
+task_categories:
+- robotics
+tags:
+- vision-language-action
+- 3d-manipulation
+- reinforcement-learning
 ---
+
 The pre-training data and checkpoints of BridgeVLA.
-arxiv:  https://arxiv.org/abs/2506.07961
+arxiv:  https://arxiv.org/abs/2506.07961
+
+Project Website: https://bridgevla.github.io/