changed the wording for where the DEPLOY_DIR_IMAGE directory
points to per Paul Eggleton's suggestion.
(From yocto-docs rev: eaa48e4dc54bf07431d389de6064329f2173ea68)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>