fix up numbering typo in README
fix up numbering typo in README

Signed-off-by: Andrew Geissler <f7919ac9f8ec0c3ffbc3f483da625c634fd31638@yahoo.com>
Change-Id: I8f005308bafcfd333664a411b578fc67e90fb47f

openbmc/phosphor-logging,openbmc/phosphor-logging,openbmc/phosphor-logging,openbmc/phosphor-logging