Ml approach example fix

[Masimba007]

Purpose

Describe the problem or feature in addition to a link to the issues.

Approach

How does this change address the problem?

Tests for New Behavior

What new tests were added to cover new features or behaviors?

Checklist

Make sure you did the following (if applicable):

• [ ] Added tests for any new features or behaviors.
• [ ] Ran ./pylint to make sure code style is consistent.
• [ ] Built and reviewed the docs.
• [ ] Added a note to the changelog.

Learning

Describe the research stage

Links to blog posts, patterns, libraries or addons used to solve this problem