[Backport 2.x] Add @sachinpkale as an OpenSearch maintainer (#8019)

.github/CODEOWNERS

@@ -1 +1 @@
-* @reta @anasalkouz @andrross @reta @Bukhtawar @CEHENKLE @dblock @gbbafna @setiah @kartg @kotwanikunal @mch2 @nknize @owaiskazi19 @Rishikesh1159 @ryanbogan @saratvemulapalli @shwetathareja @dreamer-89 @tlfeng @VachaShah @dbwiddis
+* @reta @anasalkouz @andrross @reta @Bukhtawar @CEHENKLE @dblock @gbbafna @setiah @kartg @kotwanikunal @mch2 @nknize @owaiskazi19 @Rishikesh1159 @ryanbogan @saratvemulapalli @shwetathareja @dreamer-89 @tlfeng @VachaShah @dbwiddis @sachinpkale

MAINTAINERS.md

@@ -1,39 +1,39 @@
-- [Current Maintainers](#current-maintainers)
-- [Emeritus](#emeritus)
+## Overview
+
+This document contains a list of maintainers in this repo. See [opensearch-project/.github/RESPONSIBILITIES.md](https:/opensearch-project/.github/blob/main/RESPONSIBILITIES.md#maintainer-responsibilities) that explains what the role of maintainer means, what maintainers do in this and other repos, and how they should be doing it. If you're interested in contributing, and becoming a maintainer, see [CONTRIBUTING](CONTRIBUTING.md).
 
 ## Current Maintainers
 
-| Maintainer | GitHub ID | Affiliation |
-| --------------- | --------- | ----------- |
-| Anas Alkouz | [anasalkouz](https:/anasalkouz) | Amazon |
-| Andrew Ross | [andrross](https:/andrross)| Amazon |
-| Andriy Redko | [reta](https:/reta) | Aiven |
-| Bukhtawar Khan | [Bukhtawar](https:/Bukhtawar) | Amazon |
-| Charlotte Henkle | [CEHENKLE](https:/CEHENKLE) | Amazon |
-| Dan Widdis | [dbwiddis](https:/dbwiddis) | Amazon |
-| Daniel "dB." Doubrovkine | [dblock](https:/dblock) | Amazon |
-| Gaurav Bafna | [gbbafna](https:/gbbafna) | Amazon |
-| Himanshu Setia | [setiah](https:/setiah) | Amazon |
-| Kartik Ganesh | [kartg](https:/kartg) | Amazon |
-| Kunal Kotwani | [kotwanikunal](https:/kotwanikunal) | Amazon |
-| Marc Handalian | [mch2](https:/mch2) | Amazon |
-| Nick Knize | [nknize](https:/nknize) | Amazon |
-| Owais Kazi | [owaiskazi19](https:/owaiskazi19) | Amazon |
-| Rishikesh Pasham | [Rishikesh1159](https:/Rishikesh1159) | Amazon|
-| Ryan Bogan | [ryanbogan](https:/ryanbogan) | Amazon |
-| Sarat Vemulapalli | [saratvemulapalli](https:/saratvemulapalli) | Amazon |
-| Shweta Thareja | [shwetathareja](https:/shwetathareja) | Amazon |
-| Suraj Singh | [dreamer-89](https:/dreamer-89) | Amazon |
-| Tianli Feng | [tlfeng](https:/tlfeng) | Amazon |
-| Vacha Shah | [VachaShah](https:/VachaShah) | Amazon |
+| Maintainer | GitHub ID | Affiliation |
+|--------------------------| ------------------------------------------------------- | ----------- |
+| Anas Alkouz | [anasalkouz](https:/anasalkouz) | Amazon |
+| Andrew Ross | [andrross](https:/andrross) | Amazon |
+| Andriy Redko | [reta](https:/reta) | Aiven |
+| Bukhtawar Khan | [Bukhtawar](https:/Bukhtawar) | Amazon |
+| Charlotte Henkle | [CEHENKLE](https:/CEHENKLE) | Amazon |
+| Dan Widdis | [dbwiddis](https:/dbwiddis) | Amazon |
+| Daniel "dB." Doubrovkine | [dblock](https:/dblock) | Amazon |
+| Gaurav Bafna | [gbbafna](https:/gbbafna) | Amazon |
+| Himanshu Setia | [setiah](https:/setiah) | Amazon |
+| Kartik Ganesh | [kartg](https:/kartg) | Amazon |
+| Kunal Kotwani | [kotwanikunal](https:/kotwanikunal) | Amazon |
+| Marc Handalian | [mch2](https:/mch2) | Amazon |
+| Nick Knize | [nknize](https:/nknize) | Amazon |
+| Owais Kazi | [owaiskazi19](https:/owaiskazi19) | Amazon |
+| Rishikesh Pasham | [Rishikesh1159](https:/Rishikesh1159) | Amazon |
+| Ryan Bogan | [ryanbogan](https:/ryanbogan) | Amazon |
+| Sachin Kale | [sachinpkale](https:/sachinpkale) | Amazon |
+| Sarat Vemulapalli | [saratvemulapalli](https:/saratvemulapalli) | Amazon |
+| Shweta Thareja | [shwetathareja](https:/shwetathareja) | Amazon |
+| Suraj Singh | [dreamer-89](https:/dreamer-89) | Amazon |
+| Tianli Feng | [tlfeng](https:/tlfeng) | Amazon |
+| Vacha Shah | [VachaShah](https:/VachaShah) | Amazon |
 
 ## Emeritus
 
-| Maintainer | GitHub ID | Affiliation |
-| --------------- | --------- | ----------- |
-| Abbas Hussain | [abbashus](https:/abbashus) | Amazon |
-| Megha Sai Kavikondala | [meghasaik](https:/meghasaik) | Amazon |
-| Rabi Panda | [adnapibar](https:/adnapibar) | Amazon |
-| Xue Zhou | [xuezhou25](https:/xuezhou25) | Amazon |
-
-[This document](https:/opensearch-project/.github/blob/main/MAINTAINERS.md) explains what maintainers do in this repo, and how they should be doing it. If you're interested in contributing, see [CONTRIBUTING](CONTRIBUTING.md).
+| Maintainer | GitHub ID | Affiliation |
+|-------------------------|---------------------------------------------| ----------- |
+| Abbas Hussain | [abbashus](https:/abbashus) | Amazon |
+| Megha Sai Kavikondala | [meghasaik](https:/meghasaik) | Amazon |
+| Rabi Panda | [adnapibar](https:/adnapibar) | Amazon |
+| Xue Zhou | [xuezhou25](https:/xuezhou25) | Amazon |