Example doesn't work on Windows 7.

Quotation marks doesn't work in the example on Git 1.9.5 on Windows 7. Only works with apostrophes.

Author: axmbo

book/02-git-basics/sections/aliases.asc

@@ -66,5 +66,5 @@ We can demonstrate by aliasing `git visual` to run `gitk`:
 
 [source,console]
 ----
-$ git config --global alias.visual "!gitk"
+$ git config --global alias.visual '!gitk'
 ----