Update CONTRIBUTORS.md

added my username as a contributor

Author: devmab24

CONTRIBUTORS.md

@@ -282,3 +282,4 @@ This is a list showing the GitHub usernames of all who have contributed to this
 - [@3mYouOL](https://github.com/3mYouOL)
 - [@AathifZahir](https://github.com/AathifZahir)
 - [@oshada-rashmika](https://github.com/oshada-rashmika)
+- [@devmab24](https://github.com/devmab24/)