Fixed documentation typo, parameter name is evaluation_strategy, not eval_strategy
Noticed that there was a typo in the documentation here:
https://huggingface.co/docs/transformers/v4.19.4/en/main_classes/trainer#transformers.TrainingArguments

I believe the parameter name should be `evaluation_strategy` and not `eval_strategy`
_The documentation is not available anymore as the PR was closed or merged._