lisp/ob-groovy.el: Add Palak Mathur as a maintainer

lisp/ob-groovy.el

@@ -3,6 +3,7 @@
 ;; Copyright (C) 2013-2020 Free Software Foundation, Inc.
 
 ;; Author: Miro Bezjak
+;; Maintainer: Palak Mathur
 ;; Keywords: literate programming, reproducible research
 ;; Homepage: https://orgmode.org