src DOC unify doxygen format
diff --git a/src/session_client_ch.h b/src/session_client_ch.h
index d8db141..0ef9560 100644
--- a/src/session_client_ch.h
+++ b/src/session_client_ch.h
@@ -3,6 +3,7 @@
  * @author Michal Vasko <mvasko@cesnet.cz>
  * @brief libnetconf2 Call Home session client manipulation
  *
+ * @copyright
  * Copyright (c) 2015 - 2021 CESNET, z.s.p.o.
  *
  * This source code is licensed under BSD 3-Clause License (the "License").