Adding Vikasht34 as maintainer for k-NN repo (#2482)

* Adding Vikasht34 as the maintainer in k-NN repo

Signed-off-by: Navneet Verma <navneev@amazon.com>

* Update MAINTAINERS.md

Signed-off-by: Peter Zhu <zhujiaxi@amazon.com>

---------

Signed-off-by: Navneet Verma <navneev@amazon.com>
Signed-off-by: Peter Zhu <zhujiaxi@amazon.com>
Co-authored-by: Peter Zhu <zhujiaxi@amazon.com>

.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 @ryanbogan @luyuncheng @shatejas @0ctopus13prime
+*   @heemin32 @navneet1v @VijayanB @vamshin @jmazanec15 @naveentatikonda @junqiu-lei @martin-gaievski @ryanbogan @luyuncheng @shatejas @0ctopus13prime @Vikasht34

MAINTAINERS.md

@@ -6,7 +6,7 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 
 | Maintainer              | GitHub ID                                             | Affiliation |
 |-------------------------|-------------------------------------------------------|-------------|
-| Doo Yong Kim             | [0ctopus13prime](https://github.com/0ctopus13prime)               | Amazon      |
+| Doo Yong Kim            | [0ctopus13prime](https://github.com/0ctopus13prime)   | Amazon      |
 | Heemin Kim              | [heemin32](https://github.com/heemin32)               | Amazon      |
 | Jack Mazanec            | [jmazanec15](https://github.com/jmazanec15)           | Amazon      |
 | Junqiu Lei              | [junqiu-lei](https://github.com/junqiu-lei)           | Amazon      |
@@ -17,5 +17,6 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 | Tejas Shah              | [shatejas](https://github.com/shatejas)               | Amazon      |
 | Vamshi Vijay Nakkirtha  | [vamshin](https://github.com/vamshin)                 | Amazon      |
 | Vijayan Balasubramanian | [VijayanB](https://github.com/VijayanB)               | Amazon      |
+| Vikash Tiwari           | [Vikasht34](https://github.com/Vikasht34)             | Amazon      |
 | Yuncheng Lu             | [luyuncheng](https://github.com/luyuncheng)           | Bytedance   |