rails/rails — pull request #14821 by jonatack (2014-04-20 15:34:49+00:00)
Title: Fix code indentation and improve formatting

in the Getting Started Guide.

This PR regroups #14817, #14818 and #14819 into one commit.

The arbitrary-looking change in the double `link_to` section
at the bottom is to make it identical to the other double `link_to`
sections in the guide.

[skip ci]