fix: 补全i18n文本

- 补全产品详情页的i18n文本

app/components/pages/products/ProductDetail.vue

@@ -1,16 +1,16 @@
 <template>
   <div class="product-detail">
     <el-tabs v-model="activeName" class="product-tabs" stretch>
-      <el-tab-pane label="产品详情" name="details">
+      <el-tab-pane :label="$t('product-tab.details')" name="details">
         <markdown-renderer :content="product.description || ''" />
       </el-tab-pane>
-      <el-tab-pane label="技术规格" name="specs">
+      <el-tab-pane :label="$t('product-tab.specs')" name="specs">
         <spec-table :data="product.specs" />
       </el-tab-pane>
-      <el-tab-pane label="常见问题" name="faq">
+      <el-tab-pane :label="$t('product-tab.faq')" name="faq">
         <question-list :questions="product.faqs" />
       </el-tab-pane>
-      <el-tab-pane label="相关文档" name="documents">
+      <el-tab-pane :label="$t('product-tab.documents')" name="documents">
         <document-list :documents="product.documents" />
       </el-tab-pane>
     </el-tabs>