Update README.md

README.md

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   - **Vision Backbone:** [siglip-so400m-patch14-384](https://huggingface.co/google/siglip-so400m-patch14-384)
   - **Language Model:** [t5-v1_1-xxl](https://huggingface.co/google/t5-v1_1-xxl)
 - **Pre-Training Datasets:** 46 datasets consisting of [RT-1 Dataset](https://robotics-transformer1.github.io/), [RH20T](https://rh20t.github.io/), [DROID](https://droid-dataset.github.io/), [BridgeData V2](https://rail-berkeley.github.io/bridgedata/), [RoboSet](https://robopen.github.io/roboset/), and a subset of [Open X-Embodiment](https://robotics-transformer-x.github.io/). See [todo]() for a detailed list.
-- **Repository:** [repo_url]
+- **Repository:** https://github.com/thu-ml/RoboticsDiffusionTransformer
 - **Paper :** [paper_url]
 - **Project Page:** https://rdt-robotics.github.io/rdt-robotics/