Update app.py

app.py

@@ -44,7 +44,7 @@ article="<p style='text-align: center'><a href='https://mizoru.github.io/blog/20
 
 ex_paths = ['代わる.mp3'],['大丈夫な.mp3'],['熱くない.mp3'], ['あめー雨.mp3'], ['あめー飴.mp3']
 
-examples = [[path, None, 'remove silence'] for path in ex_paths]
+examples = [[path, '', 'remove silence'] for path in ex_paths]
 
 enable_queue=True