fix(app.py): adjust print content in download_models() function

app.py

@@ -63,9 +63,9 @@ def download_models():
         if response.status_code == 200:
             with open('./rmvpe.pt', 'wb') as f:
                 f.write(response.content)
-            print("Downloaded hubert base model file successfully. File saved to ./rmvpe.pt.")
+            print("Downloaded rmvpe model file successfully. File saved to ./rmvpe.pt.")
         else:
-            raise Exception("Failed to download hubert base model file. Status code: " + str(response.status_code) + ".")
+            raise Exception("Failed to download rmvpe model file. Status code: " + str(response.status_code) + ".")
 
 download_models()