Add Marc as maintainer

Author: marcalff

README.md

@@ -40,14 +40,13 @@ See [RELEASING.MD](RELEASING.md) and [releases](https://github.com/open-telemetr
 
 * [Alex Boten](https://github.com/codeboten), Honeycomb
 * [Jack Berg](https://github.com/jack-berg), Grafana Labs
+* [Marc Alff](https://github.com/marcalff), Oracle
 * [Tyler Yahn](https://github.com/MrAlias), Splunk
 
 For more information about the maintainer role, see the [community repository](https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md#maintainer).
 
 ### Approvers
 
-* [Marc Alff](https://github.com/marcalff), Oracle
-
 For more information about the approver role, see the [community repository](https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md#approver).
 
 [annotation]: https://json-schema.org/understanding-json-schema/reference/annotations