doc: Edits to the about.rst and simple.rst files.

Book titles need italics, other minor issues Line length fixed.
Markup errors corrected.
Resubmitted to solve merge issues.

Change-Id: I069463a45655e1bd4c57828008c0868083757344
Signed-off-by: L.S. Cook <leonax.cook@intel.com>
Signed-off-by: Rodrigo Caballero <rodrigo.caballero.abraham@intel.com>