message: Fix typo in GCP KMS Client comment.
diff: @@ -101,7 +101,7 @@ GcpKmsClient::New(absl::string_view key_uri,
  absl::string_view credentials_path) {
  std::unique_ptr<GcpKmsClient> client(new GcpKmsClient());
  - // If a specific key is given, create an AWS KMSClient.
  + // If a specific key is given, create a GCP KMSClient.
  if (!key_uri.empty()) {
  client->key_name_ = GetKeyName(key_uri);
  if (client->key_name_.empty()) {
  