Adding a note to readme to address potential compatibility issues

In the [README](https://github.com/Infatoshi/cuda-course/blob/7c31dccd63beb6881ac3dc09fd722c317edea89a/02_Setup/README.md?plain=1#L16) for CUDA setup, it might be helpful to add information about CUDA versioning mismatch between nvidia-smi and nvcc --version. If the CUDA version reported by nvidia-smi is lower than the one reported by nvcc, there's a possibility that the driver might not fully support all the features of the latest CUDA toolkit version. This could lead to a runtime error message.