Updated affiliation for @dblock. (#246)

Signed-off-by: Daniel (dB.) Doubrovkine <dblock@dblock.org>

Author: dblock

MAINTAINERS.md

@@ -6,7 +6,7 @@ This document contains a list of maintainers in this repo. See [opensearch-proje
 
 | Maintainer         | GitHub ID                                               | Affiliation |
 | ------------------ | ------------------------------------------------------- | ----------- |
-| Daniel Doubrovkine | [dblock](https://github.com/dblock)                     | Amazon      |
+| Daniel Doubrovkine | [dblock](https://github.com/dblock)                     | Independent |
 | Sarat Vemulapalli  | [saratvemulapalli](https://github.com/saratvemulapalli) | Amazon      |
 | Tianli Feng        | [tlfeng](https://github.com/tlfeng)                     | Amazon      |
 | Tyler Ohlsen       | [ohltyler](https://github.com/ohltyler)                 | Amazon      |