[zh-cn] Update DevOps (cncf#941)

* [zh-cn] Update DevOps

Glossary `DevOps` is widely used, we can put it in title just as `CI` and `CD`.

Signed-off-by: tianzong48 <tianzong48@gmail.com>

* Update content/zh-cn/devops.md

Co-authored-by: Brian Yan <44219737+Rocksnake@users.noreply.github.com>

Signed-off-by: Submarinee <45026656+Submarinee@users.noreply.github.com>

Co-authored-by: Submarinee <45026656+Submarinee@users.noreply.github.com>
Signed-off-by: Jason (Jay) Smith <jaysmith@google.com>

content/zh-cn/devops.md

@@ -1,5 +1,5 @@
 ---
-title: 开发运维
+title: 开发运维 (DevOps)
 status: Completed
 category: 概念
 ---