fix(i18n): leftover EN demo UI strings

Co-authored-by: Cursor <cursoragent@cursor.com>

public/themes/website/1/en/demo/about.html

@@ -118,7 +118,7 @@
         <div class="swiper-wrapper">
           {hcTaglib:content cid="$vo.id" moduleId="1" name="contentList" item="case_top" limit="10" mainField="id,title,sub_title,content,thumbnail" sort="sort desc" subField="" onlyData="2"}
           <article class="swiper-slide ab-history__slide">
-            <time class="ab-history__year" datetime="2025">{$case_top.sub_title}<span></span></time>
+            <time class="ab-history__year" datetime="2025">{$case_top.sub_title}</time>
             <div class="ab-history__dot" aria-hidden="true"></div>
             <h3 class="ab-history__slide-title">{$case_top.title}</h3>
             <p class="ab-history__slide-desc">{$case_top.content|strip_tags|raw}</p>