Updated MAINTAINERS.md to match recommended opensearch-project format. (#284)

Signed-off-by: dblock <[email protected]>

Signed-off-by: dblock <[email protected]>

Author: dblock

MAINTAINERS.md

@@ -1,9 +1,12 @@
-## Maintainers
-| Maintainer | GitHub ID | Affiliation |
-| --------------- | --------- | ----------- |
-| Ashish Agrawal | [lezzago](https://github.com/lezzago) | Amazon |
-| Subhobrata Dey | [sbcd90](https://github.com/sbcd90) | Amazon |
-| Praveen Sameneni | [praveensameneni](https://github.com/praveensameneni) | Amazon |
-| Saurabh Singh | [getsaurabh02](https://github.com/getsaurabh02) | Amazon |
+## Overview
 
-[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).
+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
+
+| Maintainer       | GitHub ID                                             | Affiliation |
+| ---------------- | ----------------------------------------------------- | ----------- |
+| Ashish Agrawal   | [lezzago](https://github.com/lezzago)                 | Amazon      |
+| Subhobrata Dey   | [sbcd90](https://github.com/sbcd90)                   | Amazon      |
+| Praveen Sameneni | [praveensameneni](https://github.com/praveensameneni) | Amazon      |
+| Saurabh Singh    | [getsaurabh02](https://github.com/getsaurabh02)       | Amazon      |