fix load_weight_prefix (#15101)

Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

src/transformers/models/encoder_decoder/modeling_tf_encoder_decoder.py

@@ -155,7 +155,7 @@ class TFEncoderDecoderModel(TFPreTrainedModel):
     """
     config_class = EncoderDecoderConfig
     base_model_prefix = "encoder_decoder"
-    load_weight_prefix = "tf_encoder_decoder_model_1"
+    load_weight_prefix = "tf_encoder_decoder_model"
 
     def __init__(
         self,

tests/test_modeling_tf_encoder_decoder.py

@@ -958,7 +958,7 @@ class TFEncoderDecoderModelSaveLoadTests(unittest.TestCase):
 
     @slow
     def test_encoder_decoder_from_pretrained(self):
-        load_weight_prefix = "tf_encoder_decoder_model_1"
+        load_weight_prefix = TFEncoderDecoderModel.load_weight_prefix
 
         config = self.get_encoder_decoder_config()
         encoder_tokenizer = AutoTokenizer.from_pretrained("bert-base-uncased")