Update example.rb
Update example.rb

Fix method name.

tommyschaefer/xruby,Insti/exercism-ruby,Calvyn82/xruby,Insti/xruby,alexbrinkman/xruby,mamenama/xruby,jdsayle/xruby,Insti/exercism-ruby,Calvyn82/word_count,NeimadTL/ruby,dalexj/xruby,jdsayle/xruby,gchan/xruby,alexbrinkman/xruby,NeimadTL/ruby,tommyschaefer/xruby,Calvyn82/xruby,Insti/exercism-ruby,gchan/xruby,exercism/xruby,wobh/xruby,NeimadTL/ruby,Calvyn82/word_count,darrencauthon/xruby,Insti/xruby,exercism/xruby,remcopeereboom/xruby,kotp/xruby,samilokan/xruby,kotp/xruby,darrencauthon/xruby,wobh/xruby,kickinbahk/xruby,NobbZ/xruby,dalexj/xruby,JordyOne/exercism-practice,mamenama/xruby,remcopeereboom/xruby,rashmiagar/exercism,NobbZ/xruby,kickinbahk/xruby,rashmiagar/exercism,samilokan/xruby