Fix typos in copyright statements.

Change-Id: I783c56bb1d216ce3a47a19da230ee5f50aca2ab3
diff --git a/src/context.c b/src/context.c
index 8ab6f87..6b58565 100644
--- a/src/context.c
+++ b/src/context.c
@@ -2,7 +2,7 @@
  * talloc context handling.
  *
  * (C) 2019 by Harald Welte <laforge@gnumonks.org>
- * All Rights Reserverd.
+ * All Rights Reserved.
  *
  * SPDX-License-Identifier: GPL-2.0+
  *