Map model_type and doc pages names (#14944)

* Map model_type and doc pages names

* Add script

* Fix typo

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Co-authored-by: Lysandre <lysandre.debut@reseau.eseo.fr>

docs/source/model_doc/blenderbot-small.mdx

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+<!--Copyright 2020 The HuggingFace Team. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+the License. You may obtain a copy of the License at
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+http://www.apache.org/licenses/LICENSE-2.0
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+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+specific language governing permissions and limitations under the License.
+-->
+
+# Blenderbot Small
+
+Note that [`BlenderbotSmallModel`] and
+[`BlenderbotSmallForConditionalGeneration`] are only used in combination with the checkpoint
+[facebook/blenderbot-90M](https://huggingface.co/facebook/blenderbot-90M). Larger Blenderbot checkpoints should
+instead be used with [`BlenderbotModel`] and
+[`BlenderbotForConditionalGeneration`]
+
+## Overview
+
+The Blender chatbot model was proposed in [Recipes for building an open-domain chatbot](https://arxiv.org/pdf/2004.13637.pdf) Stephen Roller, Emily Dinan, Naman Goyal, Da Ju, Mary Williamson, Yinhan Liu,
+Jing Xu, Myle Ott, Kurt Shuster, Eric M. Smith, Y-Lan Boureau, Jason Weston on 30 Apr 2020.
+
+The abstract of the paper is the following:
+
+*Building open-domain chatbots is a challenging area for machine learning research. While prior work has shown that
+scaling neural models in the number of parameters and the size of the data they are trained on gives improved results,
+we show that other ingredients are important for a high-performing chatbot. Good conversation requires a number of
+skills that an expert conversationalist blends in a seamless way: providing engaging talking points and listening to
+their partners, and displaying knowledge, empathy and personality appropriately, while maintaining a consistent
+persona. We show that large scale models can learn these skills when given appropriate training data and choice of
+generation strategy. We build variants of these recipes with 90M, 2.7B and 9.4B parameter models, and make our models
+and code publicly available. Human evaluations show our best models are superior to existing approaches in multi-turn
+dialogue in terms of engagingness and humanness measurements. We then discuss the limitations of this work by analyzing
+failure cases of our models.*
+
+This model was contributed by [patrickvonplaten](https://huggingface.co/patrickvonplaten). The authors' code can be
+found [here](https://github.com/facebookresearch/ParlAI) .
+
+## BlenderbotSmallConfig
+
+[[autodoc]] BlenderbotSmallConfig
+
+## BlenderbotSmallTokenizer
+
+[[autodoc]] BlenderbotSmallTokenizer
+    - build_inputs_with_special_tokens
+    - get_special_tokens_mask
+    - create_token_type_ids_from_sequences
+    - save_vocabulary
+
+## BlenderbotSmallTokenizerFast
+
+[[autodoc]] BlenderbotSmallTokenizerFast
+
+## BlenderbotSmallModel
+
+[[autodoc]] BlenderbotSmallModel
+    - forward
+
+## BlenderbotSmallForConditionalGeneration
+
+[[autodoc]] BlenderbotSmallForConditionalGeneration
+    - forward
+
+## BlenderbotSmallForCausalLM
+
+[[autodoc]] BlenderbotSmallForCausalLM
+    - forward
+
+## TFBlenderbotSmallModel
+
+[[autodoc]] TFBlenderbotSmallModel
+    - call
+
+## TFBlenderbotSmallForConditionalGeneration
+
+[[autodoc]] TFBlenderbotSmallForConditionalGeneration
+    - call
+
+## FlaxBlenderbotSmallModel
+
+[[autodoc]] FlaxBlenderbotSmallModel
+    - __call__
+    - encode
+    - decode
+
+## FlaxBlenderbotForConditionalGeneration
+
+[[autodoc]] FlaxBlenderbotSmallForConditionalGeneration
+    - __call__
+    - encode
+    - decode