Right now the link text says: "Configuring High availability for Knative services"

This is not correct as the ha mentioned is about the control plane deployments as with Eventing. For Eventing we have simply "HA configuration".

Moreover, https://docs.openshift.com/serverless/1.29/knative-serving/config-applications/overriding-config-serving.html should be moved outside "Configuring Serverless applications" and should be under a section named Tuning Serving configuration.