update examples

app.py

@@ -167,8 +167,8 @@ prompt_files = {
     "Which gift idea needs a printer?": "poster.png",
     "患者さんは何でお金を払いますか。": "medical_bill_2.jpg",
     "เบอร์โทรร้านอะไรคะ": "receipt.png",
-    "exam.png": "第2题是啥？",
-    "book.png": "For Rage, who is the author listed as? ",
+    "第2题是啥？": "exam.png",
+    "For Rage, who is the author listed as? ": "book.png",
 }