[docs] correct input documentation for MISTRAL model to reference `in…

…put_ids` instead of `decoder_input_ids`

src/transformers/models/mistral/modeling_mistral.py

@@ -619,7 +619,7 @@ def _init_weights(self, module):
             Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
             [`PreTrainedTokenizer.__call__`] for details.
 
-            If `past_key_values` is used, optionally only the last `decoder_input_ids` have to be input (see
+            If `past_key_values` is used, optionally only the last `input_ids` have to be input (see
             `past_key_values`).
 
             If you want to change padding behavior, you should read [`modeling_opt._prepare_decoder_attention_mask`]