mnist_tensor_analysis.ipynb (TypeError: __init__() missing 1 required positional argument: 'action_str')

**Link to the notebook**
https://github.com/aws/amazon-sagemaker-examples/blob/main/sagemaker-debugger/mnist_tensor_analysis/mnist_tensor_analysis.ipynb

**Describe the bug**
This is the official notebook from Sagemaker debugger examples ****mnist_tensor_analysis.ipynb**.**
Type Error is thrown when the constructor of the Rule package is called.

Open sagemaker-debugger/mnist_tensor_analysis/mnist_tensor_analysis.ipynb and run the notebook to reproduce the TypeError. Trace the Rule package constructor call that reports the missing action_str argument; the work is done when the notebook runs past that call without the constructor error.

Written by the indexing model from the issue text.