[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

jupyter_scheduler/extension.py

@@ -6,7 +6,11 @@
 from traitlets import Bool, Type, Unicode, default
 
 from jupyter_scheduler.orm import create_tables
-from jupyter_scheduler.workflows import WorkflowsHandler, WorkflowsRunHandler, WorkflowsTasksHandler
+from jupyter_scheduler.workflows import (
+    WorkflowsHandler,
+    WorkflowsRunHandler,
+    WorkflowsTasksHandler,
+)
 
 from .handlers import (
     BatchJobHandler,