adding chishui as the maintainer (#1575)

Signed-off-by: model-collapse <[email protected]>

Author: model-collapse

.github/CODEOWNERS

@@ -1,2 +1,2 @@
 # This should match the owning team set up in https://github.com/orgs/opensearch-project/teams
-*   @heemin32 @navneet1v @VijayanB @vamshin @jmazanec15 @naveentatikonda @junqiu-lei @martin-gaievski @sean-zheng-amazon @model-collapse @zane-neo @vibrantvarun @zhichao-aws @yuye-aws @minalsha @bzhangam
+*   @heemin32 @navneet1v @VijayanB @vamshin @jmazanec15 @naveentatikonda @junqiu-lei @martin-gaievski @sean-zheng-amazon @model-collapse @zane-neo @vibrantvarun @zhichao-aws @yuye-aws @minalsha @bzhangam @chishui

MAINTAINERS.md

@@ -22,7 +22,7 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | Yuye Zhu                | [yuye-aws](https://github.com/yuye-aws)                   | Amazon      |
 | Minal Shah              | [minalsha](https://github.com/minalsha)                   | Amazon      |
 | Bo Zhang                | [bzhangam](https://github.com/bzhangam)                   | Amazon      |
-
+| Liyun Xiu               | [chishui](https://github.com/chishui)                     | Amazon      |
 
 ## Emeritus