Correct typo

README.md

@@ -16,7 +16,7 @@ You can download all Google Fonts in a simple ZIP snapshot (over 250Mb) from <ht
 #### Sync With Git
 
 You can also sync the collection with git, so that you can update by only fetching what has changed.
-To learn how to use git, Github provides [illustrated guides](https://guides.github.com) and a [youtube channel](https://www.youtube.com/user/GitHubGuides), and an [learning game that takes just 15 minutes](https://try.github.io). 
+To learn how to use git, Github provides [illustrated guides](https://guides.github.com) and a [youtube channel](https://www.youtube.com/user/GitHubGuides), and a [learning game that takes just 15 minutes](https://try.github.io). 
 Free, open source git applications are available for [Windows](https://msysgit.github.io) and [Mac OS X](http://gitx.laullon.com).
 
 ## Licensing