Add missing dash

_data/course.yml

@@ -93,7 +93,7 @@ signups:
    image: https://farm8.staticflickr.com/7301/13982521190_ce0d7c5734_s.jpg
    twitter: telliowkuwp
    githuk_username: tellio
-   name: mura nava
+ - name: mura nava
    image: https://pbs.twimg.com/profile_images/1801295431/wnw_sprite_400x400.gif
    twitter: muranava
    github_username: muranava