fix TrainerState doc because num_input_tokens_seen is unused by defau… (

huggingface#34593)

fix TrainerState doc because num_input_tokens_seen is unused by default config

Co-authored-by: kangsheng <[email protected]>

src/transformers/trainer_callback.py

@@ -64,7 +64,8 @@ class TrainerState:
             The batch size for the training dataloader. Only needed when
             `auto_find_batch_size` has been used.
         num_input_tokens_seen (`int`, *optional*, defaults to 0):
-            The number of tokens seen during training (number of input tokens, not the number of prediction tokens).
+            When tracking the inputs tokens, the number of tokens seen during training (number of input tokens, not the
+            number of prediction tokens).
         total_flos (`float`, *optional*, defaults to 0):
             The total number of floating operations done by the model since the beginning of training (stored as floats
             to avoid overflow).