Update app.py

app.py

@@ -28,7 +28,7 @@ def convert_document(file, output_format):
     if output_format == "Markdown":
         converted_text = result.document.export_to_markdown()
     elif output_format == "JSON":
-        converted_text = json.dumps(result.document.export_to_json(), indent=2)
+        converted_text = result.document.export_to_dict()
     else:
         converted_text = "⚠️ Unsupported format"