Update outage message identifier based on new implementation

Author: jeffrey-cordero

_docs/developer/development_instructions/automated_grading.md

@@ -118,13 +118,13 @@ number:
 
 ---
 
-## Debugging 
+## Debugging
 
 To debug new features for autograding, it can be helpful to run
 `submitty_autograding_shipper.py` and `submitty_autograding_worker.py`
 interactively and inspect the output.
 
-_NOTE: A cron job runs hourly to detect autograding shipper/worker outages on both local and remote machines. To avoid interference during debugging, this job should be disabled before proceeding. See [Capture Cron Error Messages](/sysadmin/installation/system_customization#capture-cron-error-messages) for instructions on disabling the script._
+_NOTE: A cron job runs hourly to detect autograding shipper outages on the primary machine. To avoid interference during debugging, this job should be disabled before proceeding. See [Capture Cron Error Messages](/sysadmin/installation/system_customization#capture-cron-error-messages) for instructions on disabling the script._
 
 To do this: