Remove non-standard hyphenation

Author: jordanmccullough

downloads/github-git-cheat-sheet.md

@@ -1,6 +1,6 @@
 # GitHub Git Cheat Sheet
 
-Git is the open-source distributed version control system that facilitates GitHub activities on your laptop or desktop. This cheat sheet summarizes commonly used Git command line instructions for quick reference.
+Git is the open source distributed version control system that facilitates GitHub activities on your laptop or desktop. This cheat sheet summarizes commonly used Git command line instructions for quick reference.
 
 ## Install git
 GitHub provides desktop clients that include a graphical user interface for the most common repository actions and an automatically updating command line edition of Git for advanced scenarios.