example: Fix DNS example policy
example: Fix DNS example policy

Fixes: 92224cece0f5 ("docs: L3/7 toFQDNs documentation w/ matchPattern")

Signed-off-by: Thomas Graf <5f50a84c1fa3bcff146405017f36aec1a10a9e38@cilium.io>

tklauser/cilium,cilium/cilium,michi-covalent/cilium,tgraf/cilium,tgraf/cilium,tgraf/cilium,michi-covalent/cilium,tklauser/cilium,cilium-team/cilium,tgraf/cilium,tklauser/cilium,cilium/cilium,cilium/cilium,cilium/cilium,michi-covalent/cilium,michi-covalent/cilium,tklauser/cilium,tgraf/cilium,tgraf/cilium,michi-covalent/cilium,tklauser/cilium,cilium/cilium,cilium-team/cilium