Fix MyDense example input to use tf.Variable instead of list

[vishnoi246]

This PR fixes a small issue in the MyDense layer example in intro_to_modules.ipynb. The original code used a plain Python list as input: simple_layer([[2.0, 2.0, 2.0]])

This caused an error because tf.matmul expects a TensorFlow tensor or variable, not a list.

Updated the code to:
simple_layer(tf.Variable([[2.0, 2.0, 2.0]]))

This change ensures the example runs correctly and aligns with TensorFlow’s expected input types.

[github-actions]

Preview

Preview and run these notebook edits with Google Colab:

• site/en/guide/intro_to_modules.ipynb

Rendered notebook diffs available on ReviewNB.com.

Format and style

Use the TensorFlow docs notebook tools to format for consistent source diffs and lint for style:

$ python3 -m pip install -U --user git+https://github.com/tensorflow/docs 
$ python3 -m tensorflow_docs.tools.nbfmt notebook.ipynb 
$ python3 -m tensorflow_docs.tools.nblint --arg=repo:tensorflow/docs notebook.ipynb 

If commits are added to the pull request, synchronize your local branch: git pull origin patch-1