[Doctests] add `configuration_blenderbot_small.py` (#19589)

* yoso config for doctest

* Revert "yoso config for doctest"

This reverts commit eae128d6f1b3631b676ffbcc181390e338819bd1.

* add configurations_blenderbot_small.py for doctests

src/transformers/models/blenderbot_small/configuration_blenderbot_small.py

@@ -95,12 +95,12 @@ class BlenderbotSmallConfig(PretrainedConfig):
     Example:
 
     ```python
-    >>> from transformers import BlenderbotSmallModel, BlenderbotSmallConfig
+    >>> from transformers import BlenderbotSmallConfig, BlenderbotSmallModel
 
     >>> # Initializing a BlenderbotSmall facebook/blenderbot_small-90M style configuration
     >>> configuration = BlenderbotSmallConfig()
 
-    >>> # Initializing a model from the facebook/blenderbot_small-90M style configuration
+    >>> # Initializing a model (with random weights) from the facebook/blenderbot_small-90M style configuration
     >>> model = BlenderbotSmallModel(configuration)
 
     >>> # Accessing the model configuration

utils/documentation_tests.txt

@@ -27,6 +27,7 @@ src/transformers/models/bigbird_pegasus/modeling_bigbird_pegasus.py
 src/transformers/models/big_bird/modeling_big_bird.py
 src/transformers/models/blenderbot/configuration_blenderbot.py
 src/transformers/models/blenderbot/modeling_blenderbot.py
+src/transformers/models/blenderbot_small/configuration_blenderbot_small.py
 src/transformers/models/blenderbot_small/modeling_blenderbot_small.py
 src/transformers/models/bloom/configuration_bloom.py
 src/transformers/models/canine/configuration_canine.py