Update app.py

Fixed example format

app.py

@@ -29,7 +29,11 @@ iface = gr.Interface(
     outputs=['text'],
     title  = "Character Sequence Recognition From Captcha Image",
     description = "Using some TrOCR models found on the HF Hub to test/break tough text captchas. Will you have to train your own?",
-    examples = ['krcx5.jpg','hyp2a.jpg','k4kyf.jpg']
+    examples = [
+        ['krcx5.jpg'],
+        ['hyp2a.jpg'],
+        ['k4kyf.jpg']
+    ]
 )
 
 iface.queue(max_size=10)