Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Update IPVS README **What this PR does / why we need it**: People complained that they feel confused about how to use IPVS-based kube-proxy correctly, probably we may need to provide them a better README. **Which issue(s) this PR fixes**: xref: #56319 **Special notes for your reviewer**: **Release note**: ```release-note NONE ```