A+C: add Chaoqun Han (individual CLA)

Change-Id: Id4aa067ef84510a31992d7d32cc697dd8b8342f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/367035
Reviewed-by: Meng Zhuo <mzh@golangcn.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Meng Zhuo <mzh@golangcn.org>
Run-TryBot: Meng Zhuo <mzh@golangcn.org>
TryBot-Result: Go Bot <gobot@golang.org>
diff --git a/AUTHORS b/AUTHORS
index 6f304f3..43dded9 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -262,6 +262,7 @@
 Casey Marshall <casey.marshall@gmail.com>
 Cezar Sá Espinola <cezarsa@gmail.com>
 ChaiShushan <chaishushan@gmail.com>
+Chaoqun Han <hanssccv@gmail.com>
 Charles Fenwick Elliott <Charles@FenwickElliott.io>
 Charles L. Dorian <cldorian@gmail.com>
 Charles Lee <zombie.fml@gmail.com>
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 7f74b0c..8018f95 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -475,6 +475,7 @@
 Changkun Ou <hi@changkun.us>
 Channing Kimble-Brown <channing@golang.org>
 Chao Xu <xuchao@google.com>
+Chaoqun Han <hanssccv@gmail.com>
 Charles Fenwick Elliott <Charles@FenwickElliott.io>
 Charles Kenney <charlesc.kenney@gmail.com>
 Charles L. Dorian <cldorian@gmail.com>