Update README

Author: chenshi3

README.md

@@ -23,7 +23,7 @@ It is also the official code release of [`[PointRCNN]`](https://arxiv.org/abs/18
 
 
 ## Changelog
-[2023-06-xx] **NEW:** Added support for [`DSVT`](https://arxiv.org/abs/2301.06051), which achieves state-of-the-art performance on large-scale Waymo Open Dataset with real-time inference speed (27HZ with TensorRt).
+[2023-06-30] **NEW:** Added support for [`DSVT`](https://arxiv.org/abs/2301.06051), which achieves state-of-the-art performance on large-scale Waymo Open Dataset with real-time inference speed (27HZ with TensorRT).
 
 [2023-05-13] **NEW:** Added support for the multi-modal 3D object detection models on Nuscenes dataset.  
 * Support multi-modal Nuscenes detection (See the [GETTING_STARTED.md](docs/GETTING_STARTED.md) to process data).