fix: the pre-commit new line issue (#1272)

# What does this PR do?
[Provide a short summary of what this PR does and why. Link to relevant
issues if applicable.]


https://github.com/meta-llama/llama-stack/actions/runs/13539948328/job/37838618774?pr=1271

```
diff --git a/docs/notebooks/Alpha_Llama_Stack_Post_Training.ipynb b/docs/notebooks/Alpha_Llama_Stack_Post_Training.ipynb
index c55c8da..3979088 100644
--- a/docs/notebooks/Alpha_Llama_Stack_Post_Training.ipynb
+++ b/docs/notebooks/Alpha_Llama_Stack_Post_Training.ipynb
@@ -6431,4 +6431,4 @@
   },
   "nbformat": 4,
   "nbformat_minor": 0
-}
\ No newline at end of file
+}
Error: Process completed with exit code 1.
```

[//]: # (If resolving an issue, uncomment and update the line below)
[//]: # (Closes #[issue-number])

## Test Plan
[Describe the tests you ran to verify your changes with result
summaries. *Provide clear instructions so the plan can be easily
re-executed.*]

[//]: # (## Documentation)

---------

Signed-off-by: reidliu <[email protected]>
Co-authored-by: reidliu <[email protected]>

docs/notebooks/Alpha_Llama_Stack_Post_Training.ipynb

@@ -6431,4 +6431,4 @@
   },
   "nbformat": 4,
   "nbformat_minor": 0
-}
+}