Fix typo in FAQ (elastic#744)

Co-authored-by: Julien Mailleret <8582351+jmlrt@users.noreply.github.com>

filebeat/README.md

@@ -147,7 +147,7 @@ The default Filebeat configuration is using Filebeat pod name for
 `agent.hostname` and `host.name` fields. The `hostname` of the Kubernetes nodes
 can be find in `kubernetes.node.name` field. If you would like to have
 `agent.hostname` and `host.name` fields set to the hostname of the nodes, you'll
-need to set `daemonset.hostNetworking` value to true.
+need to set `hostNetworking` value to true.
 
 Note that enabling [hostNetwork][] make Filebeat pod use the host network
 namespace which gives it access to the host loopback device, services listening