bug: fix code block missing backgrounds

Author: studioromeo

src/posts/2013-04-24-small-tool-to-help-look-after-your-eyes.md

@@ -36,7 +36,7 @@ crontab -e
 
 This opens up the users crontab from where we can add our cron job. `*/60` basically means every 60th minute. So it should run on the hour every hour.
 
-```
+```bash
 */60 * * * * sh /rest/app.sh
 ```
 

src/posts/2015-06-30-dotfiles-2.md

@@ -51,7 +51,7 @@ In my original dotfiles I had a prompt which asked me to put in my git name and
 
 I also learned you could also include other git config files in your global config and the same for the excludes file. This meant I didn't have to symlink my git config and could simply link to it (a win for simplicity!). My non dotfiles git config actually looks quite minimal:
 
-```
+```sh
 [include]
 	path = /Users/rob/.dotfiles/git/.gitconfig
 [core]