fix whisper

model.py

@@ -105,12 +105,12 @@ def get_pretrained_model(name: str) -> sherpa_onnx.OfflineRecognizer:
     full_repo_id = "csukuangfj/sherpa-onnx-whisper-" + name
     encoder = _get_nn_model_filename(
         repo_id=full_repo_id,
-        filename=f"{name}-encoder.int8.ort",
+        filename=f"{name}-encoder.int8.onnx",
     )
 
     decoder = _get_nn_model_filename(
         repo_id=full_repo_id,
-        filename=f"{name}-decoder.int8.ort",
+        filename=f"{name}-decoder.int8.onnx",
     )
 
     tokens = _get_token_filename(repo_id=full_repo_id, filename=f"{name}-tokens.txt")
@@ -130,8 +130,10 @@ whisper_models = {
     "base.en": get_pretrained_model,
     "small.en": get_pretrained_model,
     "medium.en": get_pretrained_model,
+    "distil-medium.en": get_pretrained_model,
     "tiny": get_pretrained_model,
     "base": get_pretrained_model,
     "small": get_pretrained_model,
+    "distil-small.en": get_pretrained_model,
     "medium": get_pretrained_model,
 }