Remove page macro use in AudioContext

[hamishwillee]

This is part of fixing #3196

It removes two uses of the {{page}} macro (and does some other minor tidy up).

[github-actions]

Preview URLs

• https://pr4851.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/AudioContextOptions
• https://pr4851.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/AudioContextOptions/latencyHint
• https://pr4851.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/AudioContextLatencyCategory
• https://pr4851.content.dev.mdn.mozit.cloud/en-US/docs/Web/API/AudioContext/AudioContext

Flaws

None! 🎉

External URLs

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

No new external URLs

---

URL: /en-US/docs/Web/API/AudioContextOptions/latencyHint
Title: AudioContextOptions.latencyHint
on GitHub

No new external URLs

---

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

No new external URLs

---

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

No new external URLs