Be consistent in how board docs are named and move all to index.rst.
This will make the URL to the board documentation predictable and easier
to remember.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
MinnowBoard has an uppercase "B" in its name. Also added a link to the
config option mentioned.
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
Anas Nashif