[Markdown] [Web/API] Fix heading IDs used in live samples

[wbamberg]

Fixes #8509 .

This PR basically adjusts EmbedLiveSample arguments so they match the generated ID for the heading, so the examples will still work in Markdown.

I've checked that the pages listed in that issue all work in a local MDN which has had this change applied, then been converted to Markdown.

[github-actions]

Preview URLs

• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/CSS_Object_Model/Using_dynamic_styling_information
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/Canvas_API/Tutorial/Applying_styles_and_colors
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/DataTransferItemList/length
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/DataTransferItemList
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/Document_Object_Model/Introduction
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/Document_Object_Model/Traversing_an_HTML_table_with_JavaScript_and_DOM_Interfaces
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/Element/querySelector
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/EventTarget/addEventListener
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/GlobalEventHandlers/onselectionchange
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/HTMLElement/focus
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/Navigator/canShare
• https://pr8543.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/setTimeout

Flaws

Note! 10 documents with no flaws that don't need to be listed. 🎉

URL: /en-US/docs/Web/API/DataTransferItemList
Title: DataTransferItemList
on GitHub
Flaw count: 1

• macros:
  • /en-US/docs/Web/API/DataTransferItemList/DataTransferItem redirects to /en-US/docs/Web/API/DataTransferItemList

---

URL: /en-US/docs/Web/API/setTimeout
Title: setTimeout()
on GitHub
Flaw count: 3

• macros:
  • /en-US/docs/Web/API/WindowOrworkerGlobalScope/setTimeout redirects to /en-US/docs/Web/API/setTimeout
  • /en-US/docs/Web/API/WindowOrworkerGlobalScope/setTimeout redirects to /en-US/docs/Web/API/setTimeout
• bad_bcd_queries:
  • No BCD data for query: api.setTimeout

External URLs

URL: /en-US/docs/Web/API/Element/querySelector
Title: Element.querySelector()
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/DataTransferItemList
Title: DataTransferItemList
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/DataTransferItemList/length
Title: DataTransferItemList.length
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/HTMLElement/focus
Title: HTMLElement.focus()
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/Navigator/canShare
Title: Navigator.canShare()
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/EventTarget/addEventListener
Title: EventTarget.addEventListener()
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/CSS_Object_Model/Using_dynamic_styling_information
Title: Using dynamic styling information
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/setTimeout
Title: setTimeout()
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/GlobalEventHandlers/onselectionchange
Title: GlobalEventHandlers.onselectionchange
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/Canvas_API/Tutorial/Applying_styles_and_colors
Title: Applying styles and colors
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/Document_Object_Model/Introduction
Title: Introduction to the DOM
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/Document_Object_Model/Traversing_an_HTML_table_with_JavaScript_and_DOM_Interfaces
Title: Traversing an HTML table with JavaScript and DOM Interfaces
on GitHub

No new external URLs