[Doctest] Bart configuration update (#19524)

* Update configuration_bart.py

* Update documentation_tests.txt

* Update documentation_tests.txt

Putting this line in a sorted order

src/transformers/models/bart/configuration_bart.py

@@ -96,12 +96,12 @@ class BartConfig(PretrainedConfig):
     Example:
 
     ```python
-    >>> from transformers import BartModel, BartConfig
+    >>> from transformers import BartConfig, BartModel
 
     >>> # Initializing a BART facebook/bart-large style configuration
     >>> configuration = BartConfig()
 
-    >>> # Initializing a model from the facebook/bart-large style configuration
+    >>> # Initializing a model (with random weights) from the facebook/bart-large style configuration
     >>> model = BartModel(configuration)
 
     >>> # Accessing the model configuration

utils/documentation_tests.txt

@@ -14,6 +14,7 @@ docs/source/en/model_doc/encoder-decoder.mdx
 src/transformers/generation_utils.py
 src/transformers/models/albert/modeling_albert.py
 src/transformers/models/albert/modeling_tf_albert.py
+src/transformers/models/bart/configuration_bart.py
 src/transformers/models/bart/modeling_bart.py
 src/transformers/models/beit/modeling_beit.py
 src/transformers/models/bert/configuration_bert.py