from the main QMO page (https://quality.mozilla.org/), I clicked on "View our FAQ" in the Getting Started box on the right. It led to https://quality.mozilla.org/docs/misc/faq/, which says: "Sorry, we couldn’t find that We looked everywhere, but we couldn’t find the page or file you were looking for. A few possible explanations: You may have followed an out-dated link or bookmark. If you entered the address by hand, you might have mistyped it. Maybe you found a bug. Good work!"
OS windows 7. The bug is reproduced. The bug status must be "new".
The site was redesigned in December, and most of the docs/ pages have been migrated to https://developer.mozilla.org/en-US/docs/Mozilla/QA Instead of "Getting Started", we now have https://quality.mozilla.org/get-involved/ and some links at the aforementioned page, neither of which mention a FAQ, so if there is still a broken link, it is located far away from the one mentioned here, so it is easier to file a new bug than to look for a new broken mention. Thanks for the report though!