[Doctest] Adding config files for convnext (#19717)

* Adding config files for configuration_clip.py

* Adding config files for convnext

* Undoing

* making the required changes

* Update documentation_tests.txt

src/transformers/models/convnext/configuration_convnext.py

@@ -67,12 +67,14 @@ class ConvNextConfig(PretrainedConfig):
 
     Example:
     ```python
-    >>> from transformers import ConvNextModel, ConvNextConfig
+    >>> from transformers import ConvNextConfig, ConvNextModel
 
     >>> # Initializing a ConvNext convnext-tiny-224 style configuration
     >>> configuration = ConvNextConfig()
-    >>> # Initializing a model from the convnext-tiny-224 style configuration
+
+    >>> # Initializing a model (with random weights) from the convnext-tiny-224 style configuration
     >>> model = ConvNextModel(configuration)
+
     >>> # Accessing the model configuration
     >>> configuration = model.config
     ```"""

utils/documentation_tests.txt

@@ -37,6 +37,7 @@ src/transformers/models/codegen/configuration_codegen.py
 src/transformers/models/conditional_detr/configuration_conditional_detr.py
 src/transformers/models/conditional_detr/modeling_conditional_detr.py
 src/transformers/models/convbert/configuration_convbert.py
+src/transformers/models/convnext/configuration_convnext.py
 src/transformers/models/convnext/modeling_convnext.py
 src/transformers/models/ctrl/configuration_ctrl.py
 src/transformers/models/ctrl/modeling_ctrl.py
@@ -80,7 +81,7 @@ src/transformers/models/longt5/modeling_longt5.py
 src/transformers/models/marian/modeling_marian.py
 src/transformers/models/markuplm/modeling_markuplm.py
 src/transformers/models/mbart/modeling_mbart.py
-src/transformers/models/megatron_bert/configuration_megatron_bert.py 
+src/transformers/models/megatron_bert/configuration_megatron_bert.py
 src/transformers/models/mobilebert/configuration_mobilebert.py
 src/transformers/models/mobilebert/modeling_mobilebert.py
 src/transformers/models/mobilebert/modeling_tf_mobilebert.py