dev-manual: Fixed "recipetool create" example

Fixes [YOCTO #10763]

The final example in the section describing how to create
the base recipe using receipetool create was wrong.  I updated
it to use the -d option in addition to the -o opetion.  I also
changed the description to match appropriately.

(From yocto-docs rev: 749970f4394af3855751c776689b7002232f2d13)

Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>