fix formatting in examples/start_multiple_transient_unit.py

Summary: Re-run the black formatter on this file.

Reviewed By: aleivag, davide125

Differential Revision: D23135503

fbshipit-source-id: ff50e755bf8cfa28616a2fea977d0a9563e8b413

Author: simpkins

examples/start_multiple_transient_unit.py

@@ -47,7 +47,7 @@ def start_transient_unit(cmd="/bin/sleep 15", delay_in_seconds=5):
     print("started {} as timer and service".format(random_unit_name))
 
 
-def start_webserver(listen_stream="0.0.0.0:7042",):
+def start_webserver(listen_stream="0.0.0.0:7042"):
     a_cmd = [
         "/usr/bin/python3",
         "-c",