docs: add section for create_model_from_{namedtuple,typeddict}

docs/usage/models.md

@@ -384,6 +384,18 @@ You can also add validators by passing a dict to the `__validators__` argument.
 {!.tmp_examples/models_dynamic_validators.py!}
 ```
 
+## Model creation from `NamedTuple` or `TypedDict`
+
+Sometimes you already use in your application classes that inherit from `NamedTuple` or `TypedDict`
+and you don't want to duplicate all your information to have a `BaseModel`.
+For this _pydantic_ provides `create_model_from_namedtuple` and `create_model_from_typeddict` methods.
+Those methods have the exact same keyword arguments as `create_model`.
+
+
+```py
+{!.tmp_examples/models_from_typeddict.py!}
+```
+
 ## Custom Root Types
 
 Pydantic models can be defined with a custom root type by declaring the `__root__` field.