Docs: TrainingArguments call incorrect
On [this](https://huggingface.co/transformers/training.html) page, there's the following code:

```
from transformers import TrainingArguments
training_args = TrainingArguments("test_trainer", evaluation_strategy="epoch")
```

However, `evaluation_strategy` needs to be an `IntervalStrategy` instead of a `string`. The way `TrainingArguments` actually needs to be called is:

```
training_args = TrainingArguments("test_trainer", evaluation_strategy=IntervalStrategy.EPOCH)
```
No, this example is correct, as both syntax work.<|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

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