The swap procedure as documented doesn't match the code, and it would
loose the contents of slot1[index] as it's erased before it is copied
anywhere. Also, add the missing word 'to'.
Signed-off-by: Ryan C Johnson <ryan.johnson@flex.com>
The complex blocks are just verbatim, and some of the outline-style
blocks are keps as pre formatted until we decide the right way to format
them.
Signed-off-by: David Brown <david.brown@linaro.org>