hello world example update

[jinz2014]

Can you please update the hello world example if destroying surfaces, kernels, tasks, thread spaces, and queues are needed in the hello world example ? The following function seems to imply that users can just destroy a device, and others will be destroyed implicitly. I hope that a hello world example serves as a gold example for beginners.

Thanks

// Destroys the CmDevice.
// Also destroys surfaces, kernels, tasks, thread spaces, and queues that
// were created using this device instance that have not explicitly been
// destroyed by calling the respective destroy functions.
cm_result_check(::DestroyCmDevice(p_cm_device));

[cmc-rep]

hello-world was written by a CM runtime developer. Therefore, I believe this comment is accurate