docs: replaced @link to @see in jsdoc

[cawa-93]

@link is inline directive. Therefore, using it as

/**
 * @link https://...
 */

is actually a wrong syntax. As a result, some editors do not handle links correctly:

Note that the link is https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver|MutationObserver.

Also, in rendered mode @link are not parsed at all,

Because the @link is used as a block directive, I replaced it with the @see directive, and changed the syntax for anchors in some places. Now:

Alternatively, you could use the link directive, but in an inline mode:

/**
 * {@link https://...}
 */

[antfu]

Thanks a lot!