Fixed link to job cluster Helm Chart guide (#468)
Fixed link to job cluster Helm Chart guide (#468)

Fix link to job cluster Helm Chart guide

Co-authored-by: Igor Dvorzhak <aecc8169baa13551e80b857e84f182aebe82edc0@google.com>
GoogleCloudPlatform/flink-on-k8s-operator,GoogleCloudPlatform/flink-on-k8s-operator,GoogleCloudPlatform/flink-on-k8s-operator