fix：代码合并遗漏

apps/bigmember_pc/src/components/article-item/ArticleItem.vue

@@ -469,7 +469,7 @@ export default {
       if (inFile) {
         const keyword = keywords[0]
         if (keyword?.length > 3) {
-          return `（<span class="highlight-text">${keyword.substring(
+          return `（<span class="highlight-text-orange-bd">${keyword.substring(
             0,
             3
           )}</span>...在附件中）`