Note: Not sure if PRs are wanted on Example code.
### Checklist
- [x] If applicable, unit tests
- [ ] If applicable, create follow-up issues for `purchases-android` and
hybrids
### Motivation
Noticed that the terms func was just passing the same `package`.
### Description
Testing: Looks like there are no tests for sample code.
This pull request refactors the terms(for package: Package) method in
the Package extension to a computed property terms. The change not only
improves readability and simplifies access to the package terms, but
also eliminates the need to pass a Package instance to a function that
belongs to the same Package type, which didn't make sense.
By making these changes, we provide a more streamlined and intuitive
approach for developers to access package terms, and eliminate the need
for an explicit method call.
Joseph Kokenge