Fix failing doctest (#26450)

* Fix doctest

* Adding modeling also for now

Author: LysandreJik

utils/not_doctested.txt

@@ -161,6 +161,7 @@ docs/source/en/model_doc/mega.md
 docs/source/en/model_doc/megatron-bert.md
 docs/source/en/model_doc/megatron_gpt2.md
 docs/source/en/model_doc/mgp-str.md
+docs/source/en/model_doc/mistral.md
 docs/source/en/model_doc/mluke.md
 docs/source/en/model_doc/mms.md
 docs/source/en/model_doc/mobilebert.md
@@ -666,6 +667,7 @@ src/transformers/models/megatron_gpt2/convert_megatron_gpt2_checkpoint.py
 src/transformers/models/mgp_str/configuration_mgp_str.py
 src/transformers/models/mgp_str/modeling_mgp_str.py
 src/transformers/models/mistral/configuration_mistral.py
+src/transformers/models/mistral/modeling_mistral.py
 src/transformers/models/mluke/convert_mluke_original_pytorch_checkpoint_to_pytorch.py
 src/transformers/models/mobilebert/convert_mobilebert_original_tf_checkpoint_to_pytorch.py
 src/transformers/models/mobilenet_v1/configuration_mobilenet_v1.py