fix: contract typo

[gikf]

Checklist:

• [x] I have read freeCodeCamp's contribution guidelines.
• [x] My pull request has a descriptive title (not a vague title like Update index.md)

[gikf]

I suppose it is best this does not bump the version. Otherwise, after updating, Campers will likely rebuild the container and lose progress 🤔

That's definitely a disadvantage, justifying keeping the same the version for as long as possible. Maybe there could be some way to semi-or-fully automatically update courses from within container, if only patch version is bumped?

[ShaunSHamilton]

I have been looking for ways to automate updates. It has been difficult. So far, the sanest approach has been to tell Campers exact commands for a specific change.