[PATCH] Document -<n> for git-format-patch

The -<n> option was not mentioned in git-format-patch's manpage till
now. Fix this.

Signed-off-by: Miklos Vajna <redacted>
---

At least as far as I see. Correct me if I'm wrong :)

 Documentation/git-format-patch.txt |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index e563810..6cbcf93 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt

@@ -53,6 +53,9 @@ OPTIONS
 -------
 include::diff-options.txt[]
 
+-<n>::
+	Limits the number of patches to prepare.
+
 -o|--output-directory <dir>::
 	Use <dir> to store the resulting files, instead of the
 	current working directory.

-- 
1.5.2.2