Fixed typo

extra/generic-init.d/celerybeat

@@ -26,7 +26,7 @@ DEFAULT_LOG_FILE="/var/log/celerybeat.log"
 DEFAULT_LOG_LEVEL="INFO"
 DEFAULT_CELERYBEAT="celery beat"
 
-# /etc/init.d/ssh: start and stop the celery task worker daemon.
+# /etc/init.d/celerybeat: start and stop the celery periodic task scheduler daemon.
 
 if test -f /etc/default/celeryd; then
     . /etc/default/celeryd