Fixes [YOCTO #11579]
The syntax for specifying a layer version was incorrect. I
have added an explanation for the correct syntax and provided
an example.
(From yocto-docs rev: 83c97473defbbac35ebca81f4ef69289f3dd8789)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>