[Markdown] [Web/API] Remove inline styles from Web/API

[wbamberg]

Part of #7898 .

Most of this was done in #5438 - this just cleans up a few leftovers.

[github-actions]

Preview URLs

• https://pr8503.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/Canvas_API/Tutorial
• https://pr8503.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/Element/clientLeft
• https://pr8503.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/IndexedDB_API/Basic_Terminology

Flaws

Note! 2 documents with no flaws that don't need to be listed. 🎉

URL: /en-US/docs/Web/API/Canvas_API/Tutorial
Title: Canvas tutorial
on GitHub
Flaw count: 1

• broken_links:
  • Is currently http:// but can become https://

External URLs

URL: /en-US/docs/Web/API/Element/clientLeft
Title: Element.clientLeft
on GitHub

No external URLs

---

URL: /en-US/docs/Web/API/IndexedDB_API/Basic_Terminology
Title: IndexedDB key characteristics and basic terminology
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/Canvas_API/Tutorial
Title: Canvas tutorial
on GitHub

• https://www.html5canvastutorials.com/ (1 time)