Fix TFSegformerForSemanticSegmentation doctest (#18362)

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

src/transformers/models/segformer/modeling_tf_segformer.py

@@ -849,8 +849,8 @@ class TFSegformerForSemanticSegmentation(TFSegformerPreTrainedModel):
         >>> outputs = model(**inputs, training=False)
         >>> # logits are of shape (batch_size, num_labels, height, width)
         >>> logits = outputs.logits
-        >>> logits.shape
-        (1, 150, 128, 128)
+        >>> list(logits.shape)
+        [1, 150, 128, 128]
         ```"""
         return_dict = return_dict if return_dict is not None else self.config.use_return_dict
         output_hidden_states = (