Update Copyright headers

src/hb-shape.cc

diff --git a/src/hb-shape.cc b/src/hb-shape.cc
index 66d951b..94b9118 100644
--- a/src/hb-shape.cc
+++ b/src/hb-shape.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009  Red Hat, Inc.
+ * Copyright © 2009  Red Hat, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *