Go to profile -> settings -> knots, check the docs button on the top right.
It links to https://tangled.org/tangled.org/core/blob/master/docs/spindle/hosting.md (same as settings -> spindle) instead of eg. https://tangled.org/tangled.org/core/blob/master/docs/knot-hosting.md.
this has been fixed! (it is not live yet) https://tangled.org/tangled.org/core/pulls/900