Malaise when looking for docs on kernel boot options

In the search facility on maas.io the top result for this search [0] leads to a 404. I think this [1] is the correct place but when selecting the UI option in the dropdown I get tossed down to the bottom of the page. Scrolling back up does allow me to see the UI output however.

[0]: https://maas.io/docs/search?q=kernel+boot+options
[1]: https://maas.io/docs/how-to-customise-machines#heading--how-to-set-global-kernel-boot-options