Hrm ... this isn't complete, as there is more to do.
I fixed `tables/site/danger/ancient/underkeep` as I'm using it, but
the other entries in `tables/site/danger` need to be _fixed_.
I'll do these as I need them, or write a script to fix them.
These tables were taken from SpiderSandals on the Ironsworn Discord.
While you can all any individual `background/xxx` table, calling the
more simple `background` table will create a complex collection of
those subtables.
