fix(post): syntax highlight causes codes unreadable on custom color s…

…cheme

_app/_posts/note/2014-02-01-svg-post-title.md

@@ -15,7 +15,7 @@ scheme-bg: "#ff9610"
 
 This is an example of custom post title using SVG image. You can simply add the following setting to your post [front-matter field](http://jekyllrb.com/docs/frontmatter/):
 
-```yaml
+```
 svg-headline: svg/cool-title.svg
 svg-headline-width: 400
 svg-headline-height: 86
@@ -25,14 +25,14 @@ Image defined for `svg-headline` should be stored at `_app/assets/svg/cool-title
 
 There's also an option for common raster images, but please note that these files should be stored at where you define `site.file`.
 
-```yaml
+```
 img-headline: cool-title.png
 img-headline-width: 500
 ```
 
 > **Pro Tips**: Keep a `<title>` tag for your SVG can help Safari generate correct post title for its Reader mode:
 
-```html
+```
 <svg xmlns="http://www.w3.org/2000/svg" width="2175" height="465" viewBox="0 0 2175 465">
 <title>Cool Article</title>
 …