Fix use of 'includes?' method. Should be 'include?'
Fix use of 'includes?' method. Should be 'include?'

hinthealth/stripe-ruby-mock,SidestepTechnologies/stripe-ruby-mock,quantopian/stripe-ruby-mock,dexcodeinc/stripe-ruby-mock,TrevorHinesley/stripe-ruby-mock,charitywater/stripe-ruby-mock,kathyonu/stripe-ruby-mock,rebelidealist/stripe-ruby-mock,rebelidealist/stripe-ruby-mock,gravitystorm/stripe-ruby-mock