[web-animations-1] Double word "time"

web-animations-1/Overview.bs

@@ -2691,7 +2691,7 @@ iteration boundaries.
 For this, and indeed for all interval timing, Web Animations uses an
 endpoint-exclusive timing model.
 This means that whilst the begin time of an interval
-is included in the interval, the end time time is not.
+is included in the interval, the end time is not.
 In interval notation this can written <code>[begin, end)</code>.
 This model provides sensible behavior when intervals are repeated and
 sequenced since there is no overlap between the intervals.