Update app.py

app.py

@@ -234,7 +234,7 @@ def main():
                         # Export it as a WAV file
                         audio.export("test.wav", format="wav")
                         wav3, sample_rate = torchaudio.load("test.wav")
-                        wav= wav3.unsqueeze(0)
+                        wav3= wav3.unsqueeze(0)
                         
                     result2, message2 = detector.detect_watermark(wav3, sample_rate=default_sr, message_threshold=0.5)
                     print(f"This is likely an unwatermarked audio: {result2}")