Update app.py

app.py

@@ -224,7 +224,7 @@ def process():
             return jsonify(response_data), 400
         
         markdown_content = create_markdown_document(files=files)
-        response_data['markdown'] = "```md\n" + markdown_content
+        response_data['markdown'] = "```markdown\n" + markdown_content + "\n```"
         response_data['html'] = markdown.markdown(markdown_content)
         response_data['filename'] = "uploaded_files_summary.md"
     else: