Adapt FontFaceSet API to new events structure

[queengooborg]

This PR adapts the FontFaceSet API to conform to the new events structure.

BCD PR: mdn/browser-compat-data#15132

[github-actions]

Preview URLs

• https://pr13302.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/FontFaceSet/loading_event
• https://pr13302.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/FontFaceSet/loadingdone_event
• https://pr13302.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/FontFaceSet/loadingerror_event
• https://pr13302.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/FontFaceSet

Flaws

URL: /en-US/docs/Web/API/FontFaceSet
Title: FontFaceSet
on GitHub
Flaw count: 3

• bad_bcd_links:
  • no explanation!
  • no explanation!
  • no explanation!

---

URL: /en-US/docs/Web/API/FontFaceSet/loading_event
Title: FontFaceSet: loading event
on GitHub
Flaw count: 1

• bad_bcd_queries:
  • No BCD data for query: api.FontFaceSet.loading_event

---

URL: /en-US/docs/Web/API/FontFaceSet/loadingerror_event
Title: FontFaceSet: loadingerror event
on GitHub
Flaw count: 1

• bad_bcd_queries:
  • No BCD data for query: api.FontFaceSet.loadingerror_event

---

URL: /en-US/docs/Web/API/FontFaceSet/loadingdone_event
Title: FontFaceSet: loadingdone event
on GitHub
Flaw count: 1

• bad_bcd_queries:
  • No BCD data for query: api.FontFaceSet.loadingdone_event

External URLs

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

No new external URLs

---

URL: /en-US/docs/Web/API/FontFaceSet/loading_event
Title: FontFaceSet: loading event
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/FontFaceSet/loadingerror_event
Title: FontFaceSet: loadingerror event
on GitHub

No new external URLs

---

URL: /en-US/docs/Web/API/FontFaceSet/loadingdone_event
Title: FontFaceSet: loadingdone event
on GitHub

No new external URLs