Fix bug in app.py

app.py

@@ -12,7 +12,7 @@ def load_audio(fname):
 asr = FasterWhisperASR("en", "large-v2")  # loads and wraps Whisper model
 online = OnlineASRProcessor(asr)  # create processing object with default buffer trimming option
 
-def transcribe(audio_file)
+def transcribe(audio_file):
     try:
         audio_data = load_audio(audio_file)