Multiple GPU support

I have the following configuration in values.yaml, but it still uses only one GPU

```
ollama:
  enabled: true
  fullnameOverride: "open-webui-ollama"
  ollama:
    gpu:
      enabled: true
      type: 'nvidia'
      number: 2
    resources:
      limits:
        nvidia.com/gpu: 2
      requests:
        nvidia.com/gpu: 2
  runtimeClassName: nvidia
```

Do you support multiple GPUs?