Fix review issues

Issue: I6AEEI
Test: Build & Boot Devices
Signed-off-by: Ndhy308 <tony.gan@huawei.com>

libc-test/src/functionalext/sigchain/BUILD.gn

-# Copyright (c) 2022 Huawei Device Co., Ltd.
+# Copyright (c) 2023 Huawei Device Co., Ltd.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at

libc-test/src/functionalext/sigchain/test_src_functionalext_sigchain.gni

-# Copyright (c) 2022 Huawei Device Co., Ltd.
+# Copyright (c) 2023 Huawei Device Co., Ltd.
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at