made changes to readme

README.md

@@ -35,7 +35,7 @@ description: >-
 - **batch_size** (`Optional[Union[int, str]]`): Batch size for evaluation, defaults to None.
 - **max_batch_size** (`Optional[int]`): Maximum batch size to try with automatic batch size detection, defaults to None.
 - **limit** (`Optional[Union[int, float]]`): Limit the number of examples per task, defaults to None.
-- **device** (`Optional[str]`): Device to run on, defaults to 'cuda' when available, otherwise 'cpu'.
+- **device** (`Optional[str]`): Device to run on. If None, defaults to 'cuda' if available, otherwise 'cpu'.
 - **revision** (`str`): Model revision to use, defaults to 'main'.
 - **trust_remote_code** (`bool`): Whether to trust remote code, defaults to False.
 - **log_samples** (`bool`): If True, logs all model outputs and documents, defaults to True.