Fix mis-matching argument in closing tag for cmake macro (#1714) (#1715)

Co-authored-by: Iakov Sergeev <yahontu@gmail.com>

CONTRIBUTORS

diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index b3d1d58..9ca2caa 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -56,6 +56,7 @@
 Hannes Hauswedell <h2@fsfe.org>
 Henrique Bucher <hbucher@gmail.com>
 Ismael Jimenez Martinez <ismael.jimenez.martinez@gmail.com>
+Iakov Sergeev <yahontu@gmail.com>
 Jern-Kuan Leong <jernkuan@gmail.com>
 JianXiong Zhou <zhoujianxiong2@gmail.com>
 Joao Paulo Magalhaes <joaoppmagalhaes@gmail.com>