Update test8.rb
Update test8.rb

result:
https://paiza.jp/poh/joshibato/matsue-ruby/result/8d1aeb03
neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers,neetsdkasu/Paiza-POH-MyAnswers