Fix the title of the Shadow Demo in Doxygen to be more verbose. (#1269)
Fix the title of the Shadow Demo in Doxygen to be more verbose. (#1269)

Co-authored-by: abhidixi11 <c3105a5cd7c39344a951ed782f4e599a760b8040@users.noreply.github.com>
aws/aws-iot-device-sdk-embedded-C,aws/aws-iot-device-sdk-embedded-C,aws/aws-iot-device-sdk-embedded-C