[zh-cn] Improve translation of "Automated rollouts and rollbacks"

Location

Page:
https://kubernetes.io/zh-cn/docs/concepts/overview/

Section:
Why you need Kubernetes and what it can do

Sentence:
"Automated rollouts and rollbacks"

Current Chinese Translation
“自动部署和回滚”

Suggested Translation
“自动发布与回滚”

Reason
In Kubernetes terminology, “rollout” usually refers to the release/update rollout process rather than the initial deployment itself.

Using “发布” may better reflect the original meaning and align better with Kubernetes commands such as:
kubectl rollout status
kubectl rollout undo

The current translation “部署” is understandable, but it may not fully convey the semantics of progressive rollout and version update management in Kubernetes.