Update type_checking_with_proptypes.md

[Dillonpw]

Because

adjustment after discussion in issue #27249

This PR

Issue

Closes #27249

Additional Information

Pull Request Requirements

• [ x] I have thoroughly read and understand The Odin Project curriculum contributing guide
• [ x] The title of this PR follows the location of change: brief description of change format, e.g. Intro to HTML and CSS lesson: Fix link text
• [ x] The Because section summarizes the reason for this PR
• The This PR section has a bullet point list describing the changes in this PR
• [ x] If this PR addresses an open issue, it is linked in the Issue section
• If any lesson files are included in this PR, they have been previewed with the Markdown preview tool to ensure it is formatted correctly
• If any lesson files are included in this PR, they follow the Layout Style Guide

[MaoShizhong]

🚀 Many thanks!