fix: var name

Signed-off-by: jupyterjazz <saba.sturua@jina.ai>

modeling_xlm_roberta.py

@@ -583,11 +583,11 @@ class XLMRobertaModel(XLMRobertaPreTrainedModel):
                 logger.warning(
                     'Matryoshka embeddings are not supported, so dimension truncation will not be performed.'
                 )
-            elif truncate_dim in self.config.matryoshka_dimension:
+            elif truncate_dim in self.config.matryoshka_dimensions:
                 all_embeddings = [tensor[:truncate_dim] for tensor in all_embeddings]
             else:
                 raise ValueError(f'The provided `truncate_dim` value of {truncate_dim} is not supported. '
-                                 f'Supported dimensions are {self.config.matryoshka_dimension}.')
+                                 f'Supported dimensions are {self.config.matryoshka_dimensions}.')
 
         if convert_to_tensor:
             all_embeddings = torch.stack(all_embeddings)