routing: Fix lint after merge that missed CI

Author: bdarnell

tornado/routing.py

@@ -184,7 +184,18 @@ def request_callable(request):
 from tornado.log import app_log
 from tornado.util import basestring_type, import_object, re_unescape, unicode_type
 
-from typing import Any, Union, Optional, Awaitable, List, Dict, Pattern, Tuple, overload, Sequence
+from typing import (
+    Any,
+    Union,
+    Optional,
+    Awaitable,
+    List,
+    Dict,
+    Pattern,
+    Tuple,
+    overload,
+    Sequence,
+)
 
 
 class Router(httputil.HTTPServerConnectionDelegate):