Add docs for headless svc (#1241)

Co-authored-by: Matea Pesic <[email protected]>

Author: as51340

pages/getting-started/install-memgraph/kubernetes.mdx

@@ -563,6 +563,7 @@ The following table lists the configurable parameters of the Memgraph HA chart a
 | `storage.logStorageAccessMode`                           | Access mode used for log storage.                                                                           | `ReadWriteOnce`            |
 | `externalAccess.coordinator.serviceType`                 | IngressNginx, NodePort, CommonLoadBalancer or LoadBalancer.                                                 | `NodePort`                 |
 | `externalAccess.dataInstance.serviceType`                | IngressNginx, NodePort or LoadBalancer.                                                                     | `NodePort`                 |
+| `headlessService.enabled`                                | Specifies whether headless services will be used inside K8s network on all instances.                       | `false`                    |
 | `ports.boltPort`                                         | Bolt port used on coordinator and data instances.                                                           | `7687`                     |
 | `ports.managementPort`                                   | Management port used on coordinator and data instances.                                                     | `10000`                    |
 | `ports.replicationPort`                                  | Replication port used on data instances.                                                                    | `20000`                    |