Docs: Page not found after navigating to "About Stately and XState" page

[ledenis]

XState version

XState version 5

Description

1. Go to https://stately.ai/docs/xstate
2. Click on "About Stately and XState" in the sidebar. Note that the url is now https://stately.ai/docs/ with a trailing "/"
3. Click on "Get started"

Expected result

I should arrive at: https://stately.ai/docs/states

Actual result

Page not found because I arrived at: https://stately.ai/docs/docs/states

Reproduction

Not applicable

Additional context

If I click on back (browser history) to try again, it is fixed.
Notice that after clicking on back, the url is https://stately.ai/docs without a trailing "/"