k8s-infra-cherrypick-robot: [release-0.11] docs: fix operator deployment instructions

JobBuild
813
06-07 19:53
pull-node-feature-discovery-build 1534283165282078720
pull-node-feature-discovery-build-gh-pages 1534283165395324928
pull-node-feature-discovery-build-image 1534283165319827456
pull-node-feature-discovery-build-image-cross 1534283165361770496
pull-node-feature-discovery-verify 1534283165198192640 1534262147159166976
pull-node-feature-discovery-verify-docs 1534283165235941376