Update README.md

templates/adding_a_new_model/README.md

@@ -17,7 +17,7 @@ limitations under the License.
 # Using `cookiecutter` to generate models
 
 This folder contains templates to generate new models that fit the current API and pass all tests. It generates
-models in both PyTorch and TensorFlow, completes the `__init__.py` and auto-modeling files, and creates the
+models in both PyTorch, TensorFlow, and Flax and completes the `__init__.py` and auto-modeling files, and creates the
 documentation.
 
 ## Usage
@@ -117,4 +117,4 @@ will be merged quickly:
 - You should run the `make fixup` utility to fix the style of the files and to ensure the code quality meets the
   library's standards.
 - You should complete the documentation file (`docs/source/model_doc/<model_name>.rst`) so that your model may be
-  usable.
\ No newline at end of file
+  usable.