I wonder if you could move the page Extension:Scribunto/Lua best practice to Help:Lua/Lua best practice. I guess it belongs as a subpage under a Lua help page, and not as a Scribunto subpage.
The page Help:Lua is a work in progress, I'll try to set it up as a landing page for a help link on the Lua pages. It is a little weird, but I believe it is better to make a help link point to "Help:Lua" than "Extension:Scribunto". A user requesting help for Lua code don't want help about Scribunto, I belive, but I'm not absolutely sure. Any idea?