C: update email address for Isfan Azhabil

Change-Id: I7f996d10a2e16795862bd661d0b344121371e084
GitHub-Last-Rev: 520e1f6
GitHub-Pull-Request: #38913
Reviewed-on: https://go-review.googlesource.com/c/go/+/232717
Reviewed-by: Ian Lance Taylor <iant@golang.org>

Author: isfanazha

CONTRIBUTORS

@@ -958,7 +958,7 @@ Irfan Sharif <irfanmahmoudsharif@gmail.com>
 Irieda Noboru <irieda@gmail.com>
 Isaac Ardis <isaac.ardis@gmail.com>
 Isaac Wagner <ibw@isaacwagner.me>
-Isfan Azhabil <isfan.azhabil@tokopedia.com>
+Isfan Azhabil <isfanazhabil@gmail.com>
 Iskander Sharipov <iskander.sharipov@intel.com> <quasilyte@gmail.com>
 Issac Trotts <issactrotts@google.com>
 Ivan Babrou <ivan@cloudflare.com>