Make corrections to tabulating CSV-data tutorial
Make corrections to tabulating CSV-data tutorial

* Replace highlight tags with triple backticks
* Replace hard tab characters with 2 spaces
* Fix typos
* Change tutorial title

jaybe-jekyll/jekyll,fulldecent/jekyll,ryanshaw/jekyll,chrisfinazzo/jekyll,x-way/jekyll,ryanshaw/jekyll,x-way/jekyll,jekyll/jekyll,jaybe-jekyll/jekyll,jekyll/jekyll,jekyll/jekyll,yhironaka/yhironaka.github.io,x-way/jekyll,ryanshaw/jekyll,fulldecent/jekyll,chrisfinazzo/jekyll,jekyll/jekyll,fulldecent/jekyll,ryanshaw/jekyll,jaybe-jekyll/jekyll,chrisfinazzo/jekyll,chrisfinazzo/jekyll,fulldecent/jekyll,jaybe-jekyll/jekyll,x-way/jekyll