chore: Fix typo 'poisoning' in comments

[pzrq]

Description

Related Issue

This is for a typo, so I disagree with a related issue being required (plus GitHub uses issues and pull requests interchangeably!), though I will create an issue if advised to do so.

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [x] 4. chore

Checklist:

• [x] I have signed the Adobe Open Source CLA.
• [x] My code follows the code style of this project.
• [ ] N/A ~My change requires a change to the documentation.~
• [ ] N/A ~I have updated the documentation accordingly.~
• [x] I have read the CONTRIBUTING document.
• [ ] N/A ~I have added tests to cover my changes.~
• [ ] N/A ~All new and existing tests passed.~

[krystiannowak]

Thanks @pzrq !