chore(strings): Update localization note to be more understandable
chore(strings): Update localization note to be more understandable

sarracini/activity-stream,sarracini/activity-stream,sarracini/activity-stream,AdamHillier/activity-stream,mozilla/activity-stream,Mardak/activity-stream,mozilla/activity-streams,mozilla/activity-stream,mozilla/activity-streams,rlr/activity-streams,rlr/activity-streams,AdamHillier/activity-stream,AdamHillier/activity-stream,Mardak/activity-stream,sarracini/activity-stream,rlr/activity-streams,mozilla/activity-stream,Mardak/activity-stream,Mardak/activity-stream,rlr/activity-streams,mozilla/activity-stream,AdamHillier/activity-stream