DEVELOPERS: add mksh/ruby to Waldemar Brodkorb

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 4d564368aaa79faa53e7808d70de588fd415475e)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -2629,6 +2629,8 @@ N:	Wade Berrier <wberrier@gmail.com>
 F:	package/ngrep/
 
 N:	Waldemar Brodkorb <wbx@openadk.org>
+F:	package/mksh/
+F:	package/ruby/
 F:	package/uclibc/
 F:	package/uclibc-ng-test/