update doc for patched status (#7930)
update doc for patched status (#7930)

the BASE_IMAGE `k8s.gcr.io/ingress-nginx/nginx:v20210915-g498892514@sha256:8c1e48123e64e3f2b90ed32a53babd9b5f5431dad26beecdcb8fc185ded3b6dd` was alreday patched
kubernetes/ingress-nginx,kubernetes/ingress-nginx,kubernetes/ingress-nginx,kubernetes/ingress-nginx,kubernetes/ingress-nginx