Clean doubled f option

zigarn · zigarn · commit f41bb618d52a · 2014-11-09T17:44:19.000+01:00
diff --git a/book/07-git-tools/sections/submodules.asc b/book/07-git-tools/sections/submodules.asc
@@ -774,7 +774,7 @@ Removing the directory isn't difficult, but it can be a bit confusing to have th
 
 [source,console]
 ----
-$ git clean -ffdx
+$ git clean -fdx
 Removing CryptoLibrary/
 
 $ git checkout add-crypto
