The help guide for What topics can I ask about here? have a handful of links under the section "What about other questions regarding anime and manga?" that redirect to meta.anime.stackexchange.com rather than anime.meta.stackexchange.com. Since meta.anime.stackexchange.com does not support HTTPS (and the auto-redirect logic doesn't seem to be working for these urls), the browser displays the message:
Your connection is not private
Please update the help guide so that the links properly redirect to anime.meta.stackexchange.com.
