Sufami Turbo games are in a separate set now, they don't have the "(ST)"
marker in the filename.
Satellaview memory paks may have "(BS)", "(BS SoundLink)" or "(BSROM)"
for various reasons that aren't important to higan, so let's just not mention
them at all.
For Windows documentation, "folder" is the correct term. For generic
documentation, probably either would do but I suspect people are
slightly more likely to be familiar with "folder".
Also, some of the text in the higan and icarus settings docs wanted to
link to a discussion of why we ignore manifests by default; now we have
such a thing.
Also, moved the "you should install the GBA BIOS" advice from the
install pages (where I doubt anybody would see it) to the "importing and
playing" guide, which I figure people are more likely to stumble across.
The actually instructions are still in `install/general.md` for lack of
anywhere more appropriate.
Tim Allen