Add public github handle

Signed-off-by: Manjunath A C <[email protected]>

Author: manju956

developers_affiliations6.txt

@@ -16539,7 +16539,7 @@ manjitkumar: pymanreads!gmail.com
 manjo-git: manjo!utexas.edu, manjo-git!users.noreply.github.com
 	Canonical Ltd. until 2020-03-01
 	Arm from 2020-03-01
-manjunath-a-c: manjunath-a-c!users.noreply.github.com, manjunath.a.c!ibm.com, [email protected]
+manju956: manjunath-a-c!users.noreply.github.com, manjunath.a.c!ibm.com, [email protected]
 	Independent until 2018-10-02
 	Intel Corporation from 2018-10-02 until 2024-06-18
 	International Business Machines Corporation from 2024-08-30