Guide needed: font-display

### MDN URL

https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display

### What specific section or headline is this issue about?

how to

### What information was incorrect, unhelpful, or incomplete?

The font-display descriptor is important for improved web performance. We should have a guide on how to use this feature, font swapping and fallback, along with best practices.

### What did you expect to see?

explanatory content.

Issue noted while writing the module documentation (https://github.com/openwebdocs/project/issues/177 and https://github.com/openwebdocs/project/issues/176)

### Do you have any supporting links, references, or citations?

_No response_

### Do you have anything more you want to share?

_No response_

### MDN metadata

Page report details

* Folder: `en-us/web/css/@font-face/font-display`
* MDN URL: https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-display
* GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/css/@font-face/font-display/index.md
* Last commit: https://github.com/mdn/content/commit/acfe8c9f1f4145f77653a2bc64a9744b001358dc
* Document last modified: 2023-07-07T07:19:19.000Z