Fix 2 Maintainability issues in .circleci\config.yml

[CodeFactor](https://www.codefactor.io/repository/github/ali5ter/homebrew-vke-cli) found multiple issues:

#### Trailing spaces
[.circleci\config.yml:20
](https://www.codefactor.io/repository/github/ali5ter/homebrew-vke-cli/source/master/.circleci/config.yml#L20)[.circleci\config.yml:63
](https://www.codefactor.io/repository/github/ali5ter/homebrew-vke-cli/source/master/.circleci/config.yml#L63)