Description

Updating selector for macOS Operating Systems in the Creating Virtual Machine assistant: MacOS is an incorrect usage. macOS is the proper one.

Type of change

[v] I have performed a self-review of my own code
[ ] I have made corresponding changes to the documentation
[v] My changes generate no new warnings
[ ] I have run tests (npm run test) that prove my fix is effective or that my feature works
[ ] I have run format check (npm run format-check) that shows any code inconsistency
[ ] I have updated the CHANGELOG.md file accordingly