[Doctest] XLNet config for doctest (#19649)

src/transformers/models/xlnet/configuration_xlnet.py

@@ -131,7 +131,7 @@ class XLNetConfig(PretrainedConfig):
     >>> # Initializing a XLNet configuration
     >>> configuration = XLNetConfig()
 
-    >>> # Initializing a model from the configuration
+    >>> # Initializing a model (with random weights) from the configuration
     >>> model = XLNetModel(configuration)
 
     >>> # Accessing the model configuration

utils/documentation_tests.txt

@@ -141,6 +141,7 @@ src/transformers/models/whisper/modeling_whisper.py
 src/transformers/models/whisper/modeling_tf_whisper.py
 src/transformers/models/xlm_roberta/configuration_xlm_roberta.py
 src/transformers/models/xlm_roberta_xl/configuration_xlm_roberta_xl.py
+src/transformers/models/xlnet/configuration_xlnet.py
 src/transformers/models/yolos/configuration_yolos.py
 src/transformers/models/yolos/modeling_yolos.py
 src/transformers/models/x_clip/modeling_x_clip.py