Update app.py

Trying GPT's fix for "upload folder and cannot be accessed" error.

app.py

@@ -17,7 +17,7 @@ def predict(img):
 title = "Bad castle predictor"
 description = "A bad model that tries to identify the type of castle."
 # examples = ['spanish.jpg', 'french.jpg', 'japanese.jpg']
-examples = ['french.jpg']
+examples = [['french.jpg']]
 
 gr.Interface(
     fn=predict,