fix(video): 修复视频发布时间显示格式

- 将发布时间格式化为年月日格式 (Y-m-d)

public/themes/website/1/zh/demo/video.html

@@ -97,7 +97,7 @@
             </span>
           </div>
           <h2 class="v-card__title">{$vo.title}</h2>
-          <time class="v-card__date" datetime="{$vo.publish_time}">{$vo.publish_time}</time>
+          <time class="v-card__date" datetime="{$vo.publish_time}">{$vo.publish_time|date='Y-m-d'}</time>
         </button>
         {/hcTaglib:contentPage}
       </div>