fix: 将按钮文本从"详情"改为"预览"以更准确描述功能

src/views/announcement/index.vue

@@ -35,7 +35,7 @@
                     size="small"
                     icon="el-icon-view"
                     @click="handleDetail(row)"
-                >详情</el-button>
+                >预览</el-button>
             </template>
 
             <!-- 客户黑名单字段自定义插槽 -->