Pontoon: Update Kabyle (kab) localization of Mozilla Activate

Co-authored-by: ZiriSut <rgebbid@gmail.com>

public/locales/kab/activate.ftl

@@ -275,6 +275,7 @@ commonvoice-activity-time-description-8 = Acu-ten yiswan n tedyant?
 commonvoice-activity-time-description-10 = Tikci n taɣect (15 tesdatin - 30 tesdatin)
 commonvoice-activity-time-description-12 = Akud n usenqed! (30 tesdatin)
 commonvoice-activity-time-description-14 = Send 15 tesdatin, suter i tyigwin ad myibdalen tamlilt.
+commonvoice-activity-time-description-15 = Tagrayt d beṭṭu (5 tesdatin)
 commonvoice-activity-crowd-description-6 = Imedyaten:
 webcompat-activity-setup-1 = <firefoxLink>Firefox</firefoxLink>
 webcompat-activity-setup-2 = <firefoxLink>Firefox i Android</firefoxLink>