Add Japanese translations for video control labels

Author: takuan517

translations/w3c_website_templates_bundle+intl-icu.ja.yaml

@@ -152,9 +152,9 @@ components:
             page: ページ
     hero:
         video:
-            play: __components.hero.video.play__
-            pause: __components.hero.video.pause__
-            not_supported: __components.hero.video.not_supported__ {video_url}
+            play: 再生
+            pause: 一時停止
+            not_supported: ご利用の環境では動画を再生できません {video_url}
 post:
     meta:
         credit: >