minor fixes

model.py

@@ -273,6 +273,7 @@ def _get_aishell2_pretrained_model(
 def _get_whisper_model(
     repo_id: str, decoding_method: str, num_active_paths: int
 ) -> sherpa_onnx.OfflineRecognizer:
+    print(f"get {repo_id}")
     assert repo_id in ("tiny.en", "base.en", "small.en", "medium.en"), repo_id
     name = repo_id
     full_repo_id = "csukuangfj/sherpa-onnx-whisper-" + name