Merge pull request #24688 from guiadco/fix-24683

fix-24683

Author: k8s-ci-robot

content/zh/docs/tasks/administer-cluster/dns-custom-nameservers.md

@@ -250,7 +250,7 @@ To explicitly force all non-cluster DNS lookups to go through a specific nameser
 指向该域名服务器，而不是 `/etc/resolv.conf`。
 
 ```
-proxy .  172.16.0.1
+forward .  172.16.0.1
 ``` 
 
 <!--