[DOCTEST] Config doctest for `MCTCT`, `MBart` and `LayoutLM` (#19889)

* Update documentation_tests.txt

* Update configuration_mbart.py

* Update configuration_mctct.py

* Update configuration_layoutlm.py

* Update configuration_layoutlmv2.py

* Update configuration_layoutlmv3.py

* Update documentation_tests.txt

src/transformers/models/layoutlm/configuration_layoutlm.py

@@ -81,12 +81,12 @@ class LayoutLMConfig(PretrainedConfig):
     Examples:
 
     ```python
-    >>> from transformers import LayoutLMModel, LayoutLMConfig
+    >>> from transformers import LayoutLMConfig, LayoutLMModel
 
     >>> # Initializing a LayoutLM configuration
     >>> configuration = LayoutLMConfig()
 
-    >>> # Initializing a model from the configuration
+    >>> # Initializing a model (with random weights) from the configuration
     >>> model = LayoutLMModel(configuration)
 
     >>> # Accessing the model configuration

src/transformers/models/layoutlmv2/configuration_layoutlmv2.py

@@ -103,12 +103,12 @@ class LayoutLMv2Config(PretrainedConfig):
     Example:
 
     ```python
-    >>> from transformers import LayoutLMv2Model, LayoutLMv2Config
+    >>> from transformers import LayoutLMv2Config, LayoutLMv2Model
 
     >>> # Initializing a LayoutLMv2 microsoft/layoutlmv2-base-uncased style configuration
     >>> configuration = LayoutLMv2Config()
 
-    >>> # Initializing a model from the microsoft/layoutlmv2-base-uncased style configuration
+    >>> # Initializing a model (with random weights) from the microsoft/layoutlmv2-base-uncased style configuration
     >>> model = LayoutLMv2Model(configuration)
 
     >>> # Accessing the model configuration

src/transformers/models/layoutlmv3/configuration_layoutlmv3.py

@@ -108,12 +108,12 @@ class LayoutLMv3Config(PretrainedConfig):
     Example:
 
     ```python
-    >>> from transformers import LayoutLMv3Model, LayoutLMv3Config
+    >>> from transformers import LayoutLMv3Config, LayoutLMv3Model
 
     >>> # Initializing a LayoutLMv3 microsoft/layoutlmv3-base style configuration
     >>> configuration = LayoutLMv3Config()
 
-    >>> # Initializing a model from the microsoft/layoutlmv3-base style configuration
+    >>> # Initializing a model (with random weights) from the microsoft/layoutlmv3-base style configuration
     >>> model = LayoutLMv3Model(configuration)
 
     >>> # Accessing the model configuration

src/transformers/models/mbart/configuration_mbart.py

@@ -93,12 +93,12 @@ class MBartConfig(PretrainedConfig):
     Example:
 
     ```python
-    >>> from transformers import MBartModel, MBartConfig
+    >>> from transformers import MBartConfig, MBartModel
 
     >>> # Initializing a MBART facebook/mbart-large-cc25 style configuration
     >>> configuration = MBartConfig()
 
-    >>> # Initializing a model from the facebook/mbart-large-cc25 style configuration
+    >>> # Initializing a model (with random weights) from the facebook/mbart-large-cc25 style configuration
     >>> model = MBartModel(configuration)
 
     >>> # Accessing the model configuration

src/transformers/models/mctct/configuration_mctct.py

@@ -103,12 +103,12 @@ class MCTCTConfig(PretrainedConfig):
     Example:
 
     ```python
-    >>> from transformers import MCTCTModel, MCTCTConfig
+    >>> from transformers import MCTCTConfig, MCTCTModel
 
     >>> # Initializing a M-CTC-T mctct-large style configuration
     >>> configuration = MCTCTConfig()
 
-    >>> # Initializing a model from the mctct-large style configuration
+    >>> # Initializing a model (with random weights) from the mctct-large style configuration
     >>> model = MCTCTModel(configuration)
 
     >>> # Accessing the model configuration

utils/documentation_tests.txt

@@ -77,9 +77,12 @@ src/transformers/models/groupvit/modeling_groupvit.py
 src/transformers/models/groupvit/modeling_tf_groupvit.py
 src/transformers/models/hubert/modeling_hubert.py
 src/transformers/models/imagegpt/configuration_imagegpt.py
+src/transformers/models/layoutlm/configuration_layoutlm.py
 src/transformers/models/layoutlm/modeling_layoutlm.py
 src/transformers/models/layoutlm/modeling_tf_layoutlm.py
+src/transformers/models/layoutlmv2/configuration_layoutlmv2.py
 src/transformers/models/layoutlmv2/modeling_layoutlmv2.py
+src/transformers/models/layoutlmv3/configuration_layoutlmv3.py
 src/transformers/models/layoutlmv3/modeling_layoutlmv3.py
 src/transformers/models/layoutlmv3/modeling_tf_layoutlmv3.py
 src/transformers/models/levit/configuration_levit.py
@@ -90,7 +93,9 @@ src/transformers/models/longt5/modeling_longt5.py
 src/transformers/models/marian/modeling_marian.py
 src/transformers/models/markuplm/modeling_markuplm.py
 src/transformers/models/maskformer/configuration_maskformer.py
+src/transformers/models/mbart/configuration_mbart.py
 src/transformers/models/mbart/modeling_mbart.py
+src/transformers/models/mctct/configuration_mctct.py
 src/transformers/models/megatron_bert/configuration_megatron_bert.py
 src/transformers/models/mobilebert/configuration_mobilebert.py
 src/transformers/models/mobilebert/modeling_mobilebert.py