Merge pull request #663 from msheaver/patch-1

Fix broken link to git-prompt.sh

Author: ben

book/A-git-in-other-environments/sections/zsh.asc

@@ -44,7 +44,7 @@ For more information on vcs_info, check out its documentation
         in the `zshcontrib(1)` manual page,
         or online at http://zsh.sourceforge.net/Doc/Release/User-Contributions.html#Version-Control-Information[].
 
-Instead of vcs_info, you might prefer the prompt customization script that ships with Git, called `git-prompt.sh`; see http://git-prompt.sh[] for details.
+Instead of vcs_info, you might prefer the prompt customization script that ships with Git, called `git-prompt.sh`; see https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh[] for details.
 `git-prompt.sh` is compatible with both Bash and Zsh.
 
 Zsh is powerful enough that there are entire frameworks dedicated to making it better.