Update README.md

Author: j-cavoizy

charts/ingress-nginx/README.md

@@ -403,6 +403,7 @@ As of version `1.26.0` of this chart, by simply not providing any clusterIP valu
 | controller.service.appProtocol | bool | `true` | If enabled is adding an appProtocol option for Kubernetes service. An appProtocol field replacing annotations that were using for setting a backend protocol. Here is an example for AWS: service.beta.kubernetes.io/aws-load-balancer-backend-protocol: http It allows choosing the protocol for each backend specified in the Kubernetes service. See the following GitHub issue for more details about the purpose: https://github.com/kubernetes/kubernetes/issues/40244 Will be ignored for Kubernetes versions older than 1.20 # |
 | controller.service.enableHttp | bool | `true` |  |
 | controller.service.enableHttps | bool | `true` |  |
+| controller.service.enableHttp2 | bool | `false` |  |
 | controller.service.enabled | bool | `true` |  |
 | controller.service.external.enabled | bool | `true` |  |
 | controller.service.externalIPs | list | `[]` | List of IP addresses at which the controller services are available # Ref: https://kubernetes.io/docs/concepts/services-networking/service/#external-ips # |