Fix slicegpt bug (microsoft#2175)

## Describe your changes
import typo
## Checklist before requesting a review
- [ ] Add unit tests for this change.
- [ ] Make sure all tests can pass.
- [ ] Update documents if necessary.
- [ ] Lint and apply fixes to your code by running `lintrunner -a`
- [ ] Is this a user-facing change? If yes, give a description of this
change to be included in the release notes.

## (Optional) Issue link

Author: xiaoyu-work

olive/model/handler/pytorch.py

@@ -174,7 +174,7 @@ def load_model(self, rank: int = None, cache_model: bool = True) -> "torch.nn.Mo
         return model
 
     def _load_slicegpt_model(self):
-        from slicgpt.hf_utils import load_sliced_model
+        from slicegpt.hf_utils import load_sliced_model
 
         model_name = self.model_attributes.get("model_name")
         if not model_name: