Clarify instructions for pointing a domain to the Ingress

It could be either an A record or a CNAME

doc/user/project/clusters/serverless/index.md

@@ -13,7 +13,7 @@ GitLab supports several ways deploy Serverless applications in both Kubernetes E
 
 Currently we support:
 
-- [Knative](#knative): Build Knative applications with Knative and `gitlabktl` on GKE.
+- [Knative](#knative): Build Knative applications with Knative and `gitlabktl` on GKE and EKS.
 - [AWS Lambda](aws.md): Create serverless applications via the Serverless Framework and GitLab CI.
 
 ## Knative
@@ -89,7 +89,7 @@ The minimum recommended cluster size to run Knative is 3-nodes, 6 vCPUs, and 22.
    for other platforms [Install kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl/).
 
 1. The Ingress is now available at this address and will route incoming requests to the proper service based on the DNS
-   name in the request. To support this, a wildcard DNS A record should be created for the desired domain name. For example,
+   name in the request. To support this, a wildcard DNS record should be created for the desired domain name. For example,
    if your Knative base domain is `knative.info` then you need to create an A record or CNAME record with domain `*.knative.info`
    pointing the ip address or hostname of the Ingress.