docs: translate plugin-dev (#5345) [ci skip]

* docs: translate plugin-dev

* update 部分语法调整

* Update docs/zh/dev-guide/plugin-dev.md

* Update docs/zh/dev-guide/plugin-dev.md

* Update docs/zh/dev-guide/plugin-dev.md

Co-authored-by: Haoqun Jiang <[email protected]>

Author: llccing