update

Author: rootsongjc

SUMMARY.md

@@ -130,9 +130,9 @@
   - [网络和集群性能测试](practice/network-and-cluster-perfermance-test.md)
   - [边缘节点配置](practice/edge-node-configuration.md)
   - [安装Nginx ingress](practice/nginx-ingress-installation.md)
-  - [安装配置DNS]
-    - [Kube-DNS](practice/configuring-dns.md)
-    - [Core-DNS](practice/coredns.md)
+  - [安装配置DNS](practice/dns-installation.md)
+    - [安装配置Kube-dns](practice/configuring-dns.md)
+    - [安装配置CoreDNS](practice/coredns.md)
 - [运维管理](practice/operation.md)
    - [Master节点高可用](practice/master-ha.md)
    - [服务滚动升级](practice/service-rolling-update.md)