covnert to markdown and sync with english version for Web/API/Event/cancelable

[yin1999]

Fixes #4234

[github-actions]

Preview URLs

• https://pr4810.content.dev.mdn.mozit.cloud/zh-CN/docs/Web/API/Event/cancelable

Flaws

URL: /zh-CN/docs/Web/API/Event/cancelable
Title: Event.cancelable
on GitHub
Flaw count: 4

• macros:
  • wrong xref macro used (consider changing which macro you use)
  • /zh-CN/docs/Web/API/Document/wheel_event does not exist but fell back to /en-US/docs/Web/API/Document/wheel_event
  • /zh-CN/docs/Web/API/Boolean does not exist but fell back to /en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean
  • /zh-CN/docs/Web/API/Document/wheel_event does not exist but fell back to /en-US/docs/Web/API/Document/wheel_event

External URLs

URL: /zh-CN/docs/Web/API/Event/cancelable
Title: Event.cancelable
on GitHub

• Only the first wheel event in a sequence should be cancelable WICG/interventions#33 (1 time) (Note! This may be a new URL 👀)