fix a small bug

Author: namanlalitnyu

.github/workflows/sglang-benchmark.yml

@@ -181,7 +181,7 @@ jobs:
           uv venv sgl_server_env
 
           # Install SGLang from source
-          uv pip install -p sgl_server_env -e "$(pwd)/sglang/python[all]" boto3 psutil gitpython
+          uv pip install -p sgl_server_env -e "$(pwd)/sglang/python[all]" boto3 psutil gitpython sentencepiece
 
           # Verify installations
           echo "$(pwd)/sgl_server_env/bin" >> $GITHUB_PATH