Having all headers automatically link is quite a new thing (a few weeks old? Something like that). The guides have had ninja section headers built in since their update though, so some now have two for the same thing. 
Embedded:
https://lovehoneyforum.com/t/the-great-big-review-and-testing-guide/257636#secret-tester
New Header Link:
https://lovehoneyforum.com/t/the-great-big-review-and-testing-guide/257636#lovehoney_heart-secret-testers