Fix grammar in chess-game's README

There is a line in the README that says

This is because the otherwise will the method be called on the 2nd argument of the range operator.

This looks incorrect so I made a PR that changes this to

This is because, otherwise, the method will be called on the 2nd argument of the range operator.

Reopened and approved. Thanks.

If you would like to submit this patch as well I will reopen it, as well, already reopened.

See [Maintainers] New `[no important files changed]` flag added for the flag that you can place there to prevent unnecessary work being done for this (and the other recent) change, if you decide to do so.

Thank you for reporting this!

Thank you for merging my fix @kotp. Unfortunately my post here has been marked as spam. I don’t know why.

Pull request: Fix grammar in chess-game's README by sid-707 · Pull Request #1600 · exercism/ruby · GitHub