add note about offsets

src/commonMain/kotlin/dev/inmo/krontab/KronSchedulerTz.kt

@@ -29,4 +29,6 @@ suspend fun KronScheduler.next(relatively: DateTimeTz) = if (this is KronSchedul
     this.next(relatively)
 } else {
     this.next(relatively.local) ?.toOffsetUnadjusted(relatively.offset)
-}
+}
+
+suspend fun KronScheduler.nextTimeZoned() = next(DateTime.now().local)