docs(contributors): added is3D-1 to contributors

Author: Whinarn

CONTRIBUTORS.md

@@ -6,6 +6,7 @@ The names are sorted alphabetically.
 
 * **[amirebrahimi](https://github.com/amirebrahimi)**
 * **[bawar9](https://github.com/bawar9)**
+* **[is3D-1](https://github.com/is3D-1)**
 * **[sbeca](https://github.com/sbeca)**
 * **[soraryu](https://github.com/soraryu)**