Show the CLI option to accept cuDNN/CUDA EULAs instead of full help

[Flamefire]

Instead of showing the whole usage just state the command line option to use.

Currently it is quite verbose:

== Temporary directory /tmp/easybuild-tmp/eb-d1xp5s6n has been removed.
Usage: /cvmfs/software.eessi.io/versions/2023.06/scripts/gpu_support/nvidia/install_cuda_and_libraries.sh [OPTIONS]
Options:
  --help                           Display this help message
  --accept-cuda-eula               You _must_ accept the CUDA EULA to install
                                   CUDA, see the EULA at
                                   https://docs.nvidia.com/cuda/eula/index.html
  --accept-cudnn-eula              You _must_ accept the cuDNN EULA to install
                                   cuDNN, see the EULA at
                                   https://docs.nvidia.com/deeplearning/cudnn/latest/reference/eula.html
  -t, --temp-dir /path/to/tmpdir   Specify a location to use for temporary
                                   storage during the installation of CUDA
                                   and/or other libraries (must have
                                   several GB available; depends on the number of installations)
ERROR: 
cuDNN shall be installed. However, the cuDNN EULA has not been accepted
You _must_ accept the cuDNN EULA via the appropriate command line option.

Instead of letting the users look for the option we can just show it