Update "next section" link for added disconnected content.

[evankanderson]

It turns out the flow when you hit the "e" button on github to propose an edit never produces a DCO, so you need to sync the repo locally and git commit --amend --signoff --no-edit && git push origin --force. 🙄

[vdice]

/brig run

[silvin-lubecki]

Thank you @evankanderson for your contribution 👍