Update Doxygen file blocks to remove copyright and license information
diff --git a/include/mbedtls/md.h b/include/mbedtls/md.h
index 89be847..f23bad4 100644
--- a/include/mbedtls/md.h
+++ b/include/mbedtls/md.h
@@ -4,7 +4,8 @@
  * \brief Generic message digest wrapper
  *
  * \author Adriaan de Jong <dejong@fox-it.com>
- *
+ */
+/*
  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
  *  SPDX-License-Identifier: Apache-2.0
  *