Added missing thread argument explanation for -h option Usage

[RohYounwoo]

Related Issues

None

Changes and Reasons

[-w warmup_iterations] [-o output_dir] --> [-w warmup_iterations] [-j num_threads] [-o output_dir]

For "nvJPEGDecMultipleInstances.cpp", there is an additional num_threads argument compared to "nvjpegDecoder.cpp".
However, the -h,--help option returns no instructions about threads, even though they already have a cool implementation!

[hoang-dt]

Thanks for the PR. Could you please remove the .DS_Store files?

[RohYounwoo]

Thanks for the PR. Could you please remove the .DS_Store files?

Thank you for the review! I just removed the .DS_Store files. Could you please confirm it?

[kvoronin]

Hi @RohYounwoo!

We have changed the license of the repository from BSD-3 to Apache 2.0 to allow accepting external contributions in the right way.

What this means is that

• the new default branch is main. (The old one called master is still there, but master and an extra bsd3_main are not supposed to be changed)
• all commits to the repository must be signed, see the new https://github.com/NVIDIA/CUDALibrarySamples/blob/main/CONTRIBUTING.md. Technically, it is as simple as doing git commit -s ... which would enforce DCO for the contribution (see more details in the CONTRIBUTING.md).

What this means for this PR:
Please change the target branch to main (potentially instead of rebase it is easier to cherry-pick commits into a new branch) and sign the commits.

Thanks!