Discrepancy between documentation and typings

[Stadly]

The documentation mentions the use of "false" and false for data-sveltekit-preload-data, but neither is allowed by the typings:

kit/packages/kit/src/core/sync/write_non_ambient.js

Line 27 in ee21412

'data-sveltekit-preload-data'?: true | '' | 'hover' | 'tap' | 'off' | undefined | null;

I'm not certain which is correct, hence the issue instead of a PR :)

[teemingc]

Apparently, we can't update these types to include false until SvelteKit 3.0 (see #10555 (comment)). But it is planned to remove the 'off' value in the future. Related: sveltejs/svelte#8638

[benmccann]

The tutorial will need to be updated as well. The docs currently use false while the tutorial uses 'off'