transformers

972fdcc7 - [`Docs`/`quantization`] Clearer explanation on how things works under the hood. + remove outdated info (#25216)

[`Docs`/`quantization`] Clearer explanation on how things works under the hood. + remove outdated info (#25216) * clearer explanation on how things works under the hood. * Update docs/source/en/main_classes/quantization.md Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com> * Update docs/source/en/main_classes/quantization.md Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com> * add `load_in_4bit` in `from_pretrained` --------- Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com> Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>