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

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

kubespawner/spawner.py

@@ -2734,7 +2734,7 @@ async def _start(self):
         if self.server_spawn_launch_delay:
             self.log.info(
                 "Delaying spawn launch for %s seconds.",
-                str(self.server_spawn_launch_delay)
+                str(self.server_spawn_launch_delay),
             )
             await asyncio.sleep(self.server_spawn_launch_delay)