Updated MAINTAINERS.md to match recommended opensearch-project format. (

opensearch-project#218)

Signed-off-by: dblock <dblock@amazon.com>

Signed-off-by: dblock <dblock@amazon.com>
Signed-off-by: Arpit Bandejiya <abandeji@amazon.com>

MAINTAINERS.md

@@ -1,10 +1,11 @@
-# OpenSearch Asynchronous Search Maintainers
+## Overview
+
+This document contains a list of maintainers in this repo. See [opensearch-project/.github/RESPONSIBILITIES.md](https://github.com/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
 
-## Maintainers
 | Maintainer            | GitHub ID                                       | Affiliation |
-|-----------------------|-------------------------------------------------| ----------- |
+| --------------------- | ----------------------------------------------- | ----------- |
 | Bukhtawar Khan        | [Bukhtawar](https://github.com/Bukhtawar)       | Amazon      |
 | Surya Sashank Nistala | [eirsep](https://github.com/eirsep)             | Amazon      |
 | Anshul Agarwal        | [anshul291995](https://github.com/anshul291995) | Amazon      |
-
-[This document](https://github.com/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).