Fix build command in deploy.rb

config/deploy.rb

@@ -42,7 +42,7 @@ namespace :deploy do
   task :update_jekyll do
     on roles(:app) do
       within "#{deploy_to}/current" do
-      	execute :jekyll, "build"
+      	execute :bundle, "exec", "jekyll", "build"
       end
     end
   end