docs: update acknowledgements

CONTRIBUTORS.md

@@ -17,7 +17,3 @@ Guidelines for modifications:
 
 * Jijie Huang
 * Yufeng Chi (-T.K.-)
-
-## Acknowledgements
-
-* Unitree Robotics

README.md

@@ -188,3 +188,10 @@ Please cite the following if you use this code or parts of it:
   year = {2024}
 }
 ```
+
+## Acknowledgements
+
+The project uses some code from the following open-source code repositories:
+
+- [unitreerobotics/unitree_guide](https://github.com/unitreerobotics/unitree_guide)
+- The code in [src/rl_sar/scripts/actuator_net.py](src/rl_sar/scripts/actuator_net.py) is modified from [scripts/actuator_net](https://github.com/Improbable-AI/walk-these-ways/tree/master/scripts/actuator_net) in the [Improbable-AI/walk-these-ways](https://github.com/Improbable-AI/walk-these-ways) repository.

README_CN.md

@@ -188,3 +188,11 @@ ros2 run rl_sar rl_real_a1
   year = {2024}
 }
 ```
+
+## 致谢
+
+本项目使用了以下开源代码库中的部分代码：
+
+- [unitreerobotics/unitree_guide](https://github.com/unitreerobotics/unitree_guide)
+- [src/rl_sar/scripts/actuator_net.py](src/rl_sar/scripts/actuator_net.py) 中的代码修改自 [Improbable-AI/walk-these-ways](https://github.com/Improbable-AI/walk-these-ways) 仓库中的 [scripts/actuator_net](https://github.com/Improbable-AI/walk-these-ways/tree/master/scripts/actuator_net)
+