replace_8bit_linear modules_to_not_convert default value fix (#22238)
* Fixed modules_to_not_convert default value
* Fixed modules_to_not_convert docstring
* Update src/transformers/utils/bitsandbytes.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
* Update src/transformers/utils/bitsandbytes.py
Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>
* ["lm_head"] if modules_to_not_convert is None
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Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>