Update src/transformers/modeling_tf_utils.py

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

src/transformers/modeling_tf_utils.py

@@ -317,7 +317,7 @@ class TFPreTrainedModel(tf.keras.Model, TFModelUtilsMixin, TFGenerationMixin):
           :class:`~transformers.PretrainedConfig` to use as configuration class for this model architecture.
         - **base_model_prefix** (:obj:`str`) -- A string indicating the attribute associated to the base model in
           derived classes of the same architecture adding modules on top of the base model.
-        - **authorized_missing_keys** (:obj:`Optional[List[str]]`) -- A list of re pattern of tensor names to ignore
+        - **authorized_missing_keys** (:obj:`List[str]`, `optional`) -- A list of re pattern of tensor names to ignore
           from the model when loading the model weights (and avoid unnecessary warnings).
         - **authorized_unexpected_keys** (:obj:`Optional[List[str]]`) -- A list of re pattern of tensor names to ignore
           from the weights when loading the model weights (and avoid unnecessary warnings).