Update AUTHORS.md

I accept the IBM Contributor License Agreement.

Author: gabylb

AUTHORS.md

@@ -22,3 +22,4 @@ Authors ordered by first contribution:
  - Abdirahim Musse (https://github.com/ab-m)
  - Richard Waller (https://github.com/rwalle61)
  - Russell Howe (https://github.com/rhowe-gds)
+ - Gaby Baghdadi (https://github.com/gabylb)