docs(readme): update acknowledgment section and project description-...

docs(readme): update acknowledgment section and project description- Streamline the Acknowledgments section in the README by removing redundant entries.- Clarify the project's current use of PyMuPDF and future plans for exploring a more  permissively licensed PDF processing library in the project description.
- Ensure all modifications adhere to the project's documentation standards and improve reader understanding.

docs/README_Ubuntu_CUDA_Acceleration_zh_CN.md

@@ -4,7 +4,7 @@
 ```bash
 nvidia-smi 
 ```
-如果看到类似如下的信息，说明已经安装了nvidia驱动，可以跳过步骤3
+如果看到类似如下的信息，说明已经安装了nvidia驱动，可以跳过步骤2
 ```
 +---------------------------------------------------------------------------------------+
 | NVIDIA-SMI 537.34                 Driver Version: 537.34       CUDA Version: 12.2     |