[Doc] Refactor runner tutorial (#657)

* refactor runner tutorial

* remove watermark in picture

* fix as comments

* remove toc in runner tutorial

* Apply suggestions from code review

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* Update docs/zh_cn/tutorials/runner.md

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>