Improve the list of "What requests use CORS" (mention the `crossorigin` attribute)

### MDN URL

https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CORS

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

What requests use CORS?

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

Setting the `crossorigin` attribute for tags can change the behaviour about CORS: https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Attributes/crossorigin

### What did you expect to see?

Mention the `crossorigin` attribute, and other cases, if any.

### 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/http/guides/cors`
* MDN URL: https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CORS
* GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/http/guides/cors/index.md
* Last commit: https://github.com/mdn/content/commit/ca26363fcc6fc861103d40ac0205e5c5b79eb2fa
* Document last modified: 2025-11-30T02:30:55.000Z