Changes

Summary

1. Mark AbstractDelayTicker as abstract (details)
2. Fix typos in AnnouncementLogger class comments (details)

Commit e56140d4eb14f9a3e449e18a183a8353765d43e1 by astares Mark AbstractDelayTicker as abstract Fix #9666
	src/Kernel/AbstractDelayTicker.class.st (diff)
Commit b3b19f8b244e7bd1dd5710504298225a6735ca04 by astares Fix typos in AnnouncementLogger class comments Fix #9668
	src/System-Announcements/AnnouncementLogger.class.st (diff)