Fix a comment (#44872)
* fix: update outdated sampler comment from generation_utils_samplers.py to logits_process.py
The comment references generation_utils_samplers.py which doesn't exist. The sampling processors are actually defined in logits_process.py.
* fix
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Co-authored-by: ivan <blues74285700@gmail.com>
Co-authored-by: Cyril Vallez <cyril.vallez@gmail.com>