This seeks to remove the "_" from the key presses of snapshots and inline
runs in the documentation. The "_" no longer does anything, but got legacy
reasons at the moment we can't actually allow "_" to be an input to a
"faked" keypress in the docs and snapshots.
Removing these clears the way to letting "_" have the same status as any
other character.
See #1994.
This could either be dropping `the`, as I've done here, or perhaps adding
something like `approach` after `SCREENS`. I feel one or the other is needed
to make this flow well.
