[Fix] Match exclude_modules pattern in convert_utils.py to quantize.py changes.

[fjosw]

Follow-up to https://github.com/NVIDIA/TensorRT-LLM/pull/2056, which I developed against v0.10. After upgrading to last week's dev release, I noticed that the exclude_modules matching pattern in quantize.py had changed to fnmatchcase in https://github.com/NVIDIA/TensorRT-LLM/pull/1793 (see this line). I have now adopted the matching pattern in convert_utils.py to be consistent with this change.