Update app.py

app.py

@@ -258,7 +258,7 @@ async def doc_parser(doc_path, prompt, model_id):
 
         try:
             json_pages = extract_json_content(pages)
-            json_pages = json.dumps(json.loads(json_pages), indent=4, ensure_ascii=False)
+            json_pages = "```json\n" + json.dumps(json.loads(json_pages), indent=4, ensure_ascii=False) + "\n```"
         except Exception as e:
             json_pages = pages
         all_pages.append(extract_makrdown(json_pages))