Documentaqtion/git-submodule.txt: Typofix

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-submodule.txt

@@ -129,7 +129,7 @@ summary::
 	in the submodule between the given super project commit and the
 	index or working tree (switched by --cached) are shown. If the option
 	--files is given, show the series of commits in the submodule between
-	the index of super project the and the working tree of the submodule
+	the index of the super project and the working tree of the submodule
 	(this option doesn't allow to use the --cached option or to provide an
 	explicit commit).