Remove legacy spec macros from glossary/misc pages

[Elchi3]

I was checking where we still use the old specification tables. This removes some of them from glossary/random pages or replaces them with a simple link (which should be enough, no need for a table).

[github-actions]

Preview URLs

• https://pr6709.content.dev.mdn.mozit.cloud/en-US/docs/Mozilla/Firefox/Experimental_features
• https://pr6709.content.dev.mdn.mozit.cloud/en-US/docs/Related/IMSC
• https://pr6709.content.dev.mdn.mozit.cloud/en-US/docs/Glossary/Forbidden_response_header_name
• https://pr6709.content.dev.mdn.mozit.cloud/en-US/docs/Glossary/Site
• https://pr6709.content.dev.mdn.mozit.cloud/en-US/docs/Glossary/Truthy
• https://pr6709.content.dev.mdn.mozit.cloud/en-US/docs/Glossary/Falsy
• https://pr6709.content.dev.mdn.mozit.cloud/en-US/docs/Glossary/CSS_Selector
• https://pr6709.content.dev.mdn.mozit.cloud/en-US/docs/Glossary/Origin

Flaws

Note! 6 documents with no flaws that don't need to be listed. 🎉

URL: /en-US/docs/Mozilla/Firefox/Experimental_features
Title: Experimental features in Firefox
on GitHub
Flaw count: 1

• macros:
  • /en-US/docs/Web/API/Document/autoplayPolicy does not exist

---

URL: /en-US/docs/Glossary/CSS_Selector
Title: Selector (CSS)
on GitHub
Flaw count: 1

• macros:
  • /en-US/docs/Glossary/CSS_class does not exist

External URLs

URL: /en-US/docs/Mozilla/Firefox/Experimental_features
Title: Experimental features in Firefox
on GitHub

• https://drafts.csswg.org/css-fonts-5/ (1 time) (Note! This may be a new URL 👀)
• https://drafts.csswg.org/css-inline/ (1 time) (Note! This may be a new URL 👀)
• https://drafts.csswg.org/css-sizing-4/ (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Related/IMSC
Title: IMSC: subtitles and captioning for the Web
on GitHub

• https://w3c.github.io/imsc/imsc1/spec/ttml-ww-profiles.html (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Glossary/Forbidden_response_header_name
Title: Forbidden response header name
on GitHub

• https://fetch.spec.whatwg.org/ (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Glossary/Site
Title: Site
on GitHub

No external URLs

---

URL: /en-US/docs/Glossary/Truthy
Title: Truthy
on GitHub

No external URLs

---

URL: /en-US/docs/Glossary/Falsy
Title: Falsy
on GitHub

• https://tc39.es/ecma262/ (1 time)

---

URL: /en-US/docs/Glossary/CSS_Selector
Title: Selector (CSS)
on GitHub

No external URLs

---

URL: /en-US/docs/Glossary/Origin
Title: Origin
on GitHub

• https://html.spec.whatwg.org/multipage/origin.html (1 time) (Note! This may be a new URL 👀)

[teoli2003]

Nice, one more step towards putting #1146 at rest.

[teoli2003]

Strangely, linking an issue (#1146) in the approval comment doesn't back-link this PR in it…