Corrects the name to match the squeue result

Upon reviewing everyone's current job-with-name-status.snip, I realized that they all had "new_name" instead of "hello-world".
If "hello-world" is preferred, that would mean updating everyone's snip instead of the one line here.

_episodes/13-scheduler.md

@@ -162,7 +162,7 @@ name of a job. Add an option to the script:
 
 ```
 {{ site.remote.bash_shebang }}
-{{ site.sched.comment }} {{ site.sched.flag.name }} hello-world
+{{ site.sched.comment }} {{ site.sched.flag.name }} new_name
 
 echo -n "This script is running on "
 hostname