add name to contributor list

Signed-off-by: 0xF0D0 <goodbumsu@gmail.com>

contributors.md

@@ -110,3 +110,4 @@ Thank you to all contributors:
 * [JB Cayrou](https://github.com/jbcayrou)
 * [Cornelius Diekmann](https://github.com/diekmann)
 * [Andrés Rojas](https://github.com/c0r3dump3d)
+* [Beomsu Kim](https://github.com/0xF0D0)