Error in running Llama 2 generation example

Hi, I got the following error when I tried to execute the command in the README:

```
scores, values = faiss.knn_gpu(faiss.StandardGpuResources(), queries, self.keys, k,
TypeError: torch_replacement_knn_gpu() got an unexpected keyword argument 'device'
```
I'm using `faiss-gpu@1.7.2`.

The error occurs in a call to faiss.knn_gpu with a 'device' keyword argument. Look at the README for the exact command that fails, then find the code that calls faiss.knn_gpu, likely in the generation example. Check the faiss-gpu version compatibility and the function signature. The fix may involve removing the 'device' argument or adjusting the call to match the installed faiss API.

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