word_wrap: fix Ruby 2.7 warning

[fatih]

This fixes the following warning:

vendor/gems/ruby/2.7.0/gems/shoulda-matchers-4.3.0/lib/shoulda/matchers/util/word_wrap.rb:8: 
  warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call

[mcmire]

Thanks for this! We're working on adding Ruby 2.7 to the test matrix (see #1310), so we'll make sure to merge this once that's merged in.

[fatih]

@mcmire thanks for the heads up. Let me know if there is anything else I need to do. I have a similar PR here in another shoulda- repo: thoughtbot/shoulda-context#64

[mcmire]

I've merged #1310, but the same issue that held up thoughtbot/shoulda-context#64 is also holding this one up too (the bit of code that detects for warnings and fails the build is also not working here). I am fixing this in #1328, so once that's merged then we should be clear to merge this.

[mcmire]

Actually based on my findings in #1328 I can already guarantee this will fix the warning so I'll go ahead and merge this ahead of that PR :) Thank you!

[fatih]

Thank you @mcmire