Fix spelling
Fix spelling

donnykurnia/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,donnykurnia/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,jonseaberg/heroku-buildpack-turbo-sprockets,pilotcreative/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,makifund/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,ericboehs/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,Scalingo/ruby-buildpack,orenyk/heroku-buildpack-ruby,Genius/heroku-buildpack-ruby,Genius/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,brightbytes/heroku-buildpack-ruby-without-assets-precompile,instacart/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,Scalingo/ruby-buildpack,brightbytes/heroku-buildpack-ruby-without-assets-precompile,instacart/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby