git-format-patch.txt: fix explanation of an example.

Signed-off-by: Sergei Organov <osv@javad.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-format-patch.txt

diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index c9857a2..f0617ef 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -168,7 +168,7 @@
 	is created in the current directory.
 
 git-format-patch \--root origin::
-	Extract all commits which that leads to 'origin' since the
+	Extract all commits that lead to 'origin' since the
 	inception of the project.
 
 git-format-patch -M -B origin::