hisysevent tag订阅文档更新

Signed-off-by: Nxuyong <xuyong59@huawei.com>

zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-read.md

@@ -175,7 +175,9 @@ HiSysEvent提供了跨进程订阅机制，开发者可以通过注册订阅接
 	HiSysEventManager::AddEventListener(demoListener, sysRules);
 	```
 
-2.  编译配置文件中增加对hisysevent\_native组件libhisyseventmanager库的依赖：
+2.  编译配置
+
+    在BUILD.gn编译文件中，需要添加依赖hisysevent\_native组件的libhisyseventmanager库：
 
     ```
 	external_deps = [ "hisysevent_native:libhisyseventmanager", ]