docs(README): update CUDA version example in Ubuntu acceleration guide

docs/README_Ubuntu_CUDA_Acceleration_zh_CN.md

@@ -11,7 +11,6 @@ nvidia-smi
 注意:`CUDA Version` 显示的版本号应 >= 12.1，如显示的版本号小于12.1，请升级驱动
 
 ```plaintext
-```
 +---------------------------------------------------------------------------------------+
 | NVIDIA-SMI 537.34                 Driver Version: 537.34       CUDA Version: 12.2     |
 |-----------------------------------------+----------------------+----------------------+