Fix Broken KEP Link In Docs

Fix a broken link to KEP 0030 in the dns-stack docs,
which has been merged into KEP 1024.

docs/dns-stack.md

@@ -230,7 +230,7 @@ cluster service names.
 
 Setting ``enable_nodelocaldns`` to ``true`` will make pods reach out to the dns (core-dns) caching agent running on the same node, thereby avoiding iptables DNAT rules and connection tracking. The local caching agent will query core-dns (depending on what main DNS plugin is configured in your cluster) for cache misses of cluster hostnames(cluster.local suffix by default).
 
-More information on the rationale behind this implementation can be found [here](https://github.com/kubernetes/enhancements/blob/master/keps/sig-network/0030-nodelocal-dns-cache.md).
+More information on the rationale behind this implementation can be found [here](https://github.com/kubernetes/enhancements/blob/master/keps/sig-network/1024-nodelocal-cache-dns/README.md).
 
 **As per the 2.10 release, Nodelocal DNS cache is enabled by default.**