Language fix: "difference licenses"

Signed-off-by: Erik de Castro Lopo <erikd@mega-nerd.com>
diff --git a/build/Makefile.am b/build/Makefile.am
index bc0048b..1db1db4 100644
--- a/build/Makefile.am
+++ b/build/Makefile.am
@@ -3,7 +3,7 @@
 #  Copyright (C) 2011-2013  Xiph.Org Foundation
 #
 #  This file is part the FLAC project.  FLAC is comprised of several
-#  components distributed under difference licenses.  The codec libraries
+#  components distributed under different licenses.  The codec libraries
 #  are distributed under Xiph.Org's BSD-like license (see the file
 #  COPYING.Xiph in this distribution).  All other programs, libraries, and
 #  plugins are distributed under the GPL (see COPYING.GPL).  The documentation