refactor file structure

README.md

@@ -37,14 +37,15 @@ A curated collection of utilities for [LeRobot Projects](https://github.com/hugg
   - [x] [RoboMIND to LeRobot](./robomind2lerobot/README.md)
   - [x] [LeRobot to RLDS](./lerobot2rlds/README.md)
 
+- **Dataset Process Utils**:
+
+  - [x] [Dataset Merging](./dataset_merging/README.md)
+
 - ​**Version Conversion​**​:
 
-  - [x] [LeRobotv2.0 to LeRobotv2.1](./utils/version_convert/README.md)
+  - [x] [LeRobotv2.0 to LeRobotv2.1](./ds_version_convert/README.md)
   - [ ] LeRobotv2.1 to LeRobotv2.0
 
-- **Other Utils**:
-  - [x] [Dataset Merging](./utils/dataset_merging/README.md)
-
 ## 📚 Awesome works supporting LeRobot
 
 - [SpatialVLA](https://github.com/SpatialVLA/SpatialVLA): a spatial-enhanced vision-language-action model that is trained on 1.1 Million real robot episodes ![GitHub Repo stars](https://img.shields.io/github/stars/SpatialVLA/SpatialVLA)

ds_version_convert/README.md

@@ -26,7 +26,7 @@ Install decord: https://github.com/dmlc/decord
 This equal to lerobot projects, it will use dataset from huggingface hub, delete `stats.json` and push to huggingface hub (multi-thread and `pyav` as video backend), you can:
 
 ```bash
-python utils/version_convert/convert_dataset_v20_to_v21.py \
+python ds_version_convert/convert_dataset_v20_to_v21.py \
     --repo-id=aliberts/koch_tutorial \
     --delete-old-stats \
     --push-to-hub \