Update README

Author: chucklorenz

README.md

@@ -74,8 +74,7 @@ Optional icons linked to social media/networking accounts.
 >_link
 >The URL that will be followed if a user clicks on the icon. It should take the form of a fully qualified internet address, including any parameters that identify the account. If the `_link` is not provided, the icon will not be displayed. If you don't want any icons to appear, don't provide any `_links`. You can, in fact, omit from `course.json` the complete `_socialLinks` section.
 
-        
- ##Limitations
+##Limitations
 
  - Accessibility and RTL support have not been addressed.