Fix Trainer and Args to mention AdamW, not Adam. (#9685)
Fix Trainer and Args to mention AdamW, not Adam. (#9685)

* Fix Trainer and Args to mention AdamW, not Adam.

* Update the docs for Training Arguments.

* Change arguments adamw_* to adam_*

* Fixed links to AdamW in TrainerArguments docs

* Fix line length in Training Args docs.
huggingface/transformers,huggingface/transformers,huggingface/transformers,huggingface/pytorch-transformers,huggingface/transformers