Near the end, it specifically references FAQ 7 by name:
"Once you have created a custom S1 style, you will need to explicitly choose to use that style for your journal. See: "How do I modify the look of my journal?" (http://www.livejournal.com/support/faqbrowse.bml?faqid=7)"
FAQ 7 was renamed "How do I customize the look of my journal?" instead of 'modify.' So FAQ 128's a bit incorrect now. However, I'd take the FAQ text title out entirely, since the same issue could crop up in the future again anyway.
Probably just change it to something like this:
""Once you have created a custom S1 style, you will need to explicitly choose to use that style for your journal by following the instructions given in http://www.livejournal.com/support/faqbrowse.bml?faqid=7."