Typo fix

bazarr/scheduler.py

@@ -67,7 +67,7 @@ else:
     scheduler = BackgroundScheduler()
 
 if not args.no_update:
-    if settings.general.getboolean('auto-update'):
+    if settings.general.getboolean('auto_update'):
         scheduler.add_job(check_and_apply_update, IntervalTrigger(hours=6), max_instances=1, coalesce=True,
         misfire_grace_time=15, id='update_bazarr', name='Update bazarr from source on Github')
     else: