Keyword argument 'evaluation_strategy' in TrainingArguments has been replaced with 'eval_strategy'

[vyshnev]

Hi team,

In Chapter 7: Fine-Tuning a Masked Language Model, the example code uses:

TrainingArguments(
    ...,
    evaluation_strategy="epoch",
    ...
)

However, the evaluation_strategy keyword argument in TrainingArguments has now been replaced with eval_strategy. Using the old argument causes an error:

TypeError: TrainingArguments.__init__() got an unexpected keyword argument 'evaluation_strategy'

See this related discussion for reference:
huggingface/transformers#7974 (comment)

Proposed fix:
Update the code example to use eval_strategy instead of evaluation_strategy to match the latest transformers library version.