Clean up default config spec.

lib/jekyll.rb

@@ -49,7 +49,7 @@ module Jekyll
   VERSION = '0.11.2'
 
   # Default options. Overriden by values in _config.yml or command-line opts.
-  # (Strings rather symbols used for compatability with YAML).
+  # Strings rather than symbols are used for compatability with YAML.
   DEFAULTS = {
     'safe'          => false,
     'auto'          => false,
@@ -79,12 +79,15 @@ module Jekyll
       'png_dir'    => 'images/latex',
       'png_url'    => '/images/latex'
     },
+
     'rdiscount' => {
       'extensions' => []
     },
+
     'redcarpet' => {
       'extensions' => []
     },
+
     'kramdown' => {
       'auto_ids'      => true,
       'footnote_nr'   => 1,
@@ -102,6 +105,7 @@ module Jekyll
         'coderay_css'               => 'style'
       }
     },
+
     'redcloth' => {
       'hard_breaks' => true
     }