fix: render of markdown preview

api/markdown.py

@@ -35,7 +35,7 @@ def get_markdown(markdown_id):
         markdown = session.query(Markdown).get(markdown_id)
         if markdown is None:
             return jsonify({"error": "file not found"}), 404
-        return jsonify(markdown.to_dict())
+        return jsonify(markdown.to_dict()), 200
 
 @markdown_bp.route('/', methods=['POST'])
 @require_auth(roles=['admin', 'creator'])