Update _icinga2.mdx

docs-cn/14-reference/_icinga2.mdx

 
 配置 taosAdapter 接收 icinga2 数据的方法：
 
-- 参考链接 `https://icinga.com/docs/icinga-2/latest/doc/14-features/#opentsdb-writer` 使能 opentsdb-writer
+- 参考链接 https://icinga.com/docs/icinga-2/latest/doc/14-features/#opentsdb-writer 使能 opentsdb-writer
 - 使能 taosAdapter 配置文件 /etc/taos/taosadapter.toml 中配置项 opentsdb_telnet.enable
 - 修改配置文件 /etc/icinga2/features-enabled/opentsdb.conf