It's not a broken link. The api is really rooted at /1 but there is nothing to show there through a browser.
The problem, if there is one, lies either with the api /1 which should probably show something (like the home page at /).
Or with the doc tooling (sphinx) which transforms all links into html links (I don't know if we can prevent this specifically with some tag or something).
Oh I see..
I was just referencing the documentation and I saw that and it seemed like an error.
But I remember now we already had this discussion.
I would show the same page as without the /1, if possible...
In any case a 404, looks like an error..