sample.yaml was missing a tests section, making it unable to run with
twister. This patch adds the section.
While at that, fix an issue in the sample README.rst.
Fixes#53656.
Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>
A simple sample with some (explained) tricks to get code relocation for
Intel ADSP CAVS platforms.
Signed-off-by: Ederson de Souza <ederson.desouza@intel.com>