Standardize maintainer and approver listing on README (#414)

Author: trask

README.md

@@ -6,16 +6,14 @@
 
 See [CONTRIBUTING.md](CONTRIBUTING.md)
 
-### Approvers
+### Maintainers
 
-- OpenTelemetry Specification Approvers ([@open-telemetry/specs-approvers](https://github.com/orgs/open-telemetry/teams/specs-approvers))
-  - See [open-telemetry/community](https://github.com/open-telemetry/community/blob/main/community-members.md#specifications-and-proto) for the current list.
+- [OpenTelemetry Technical Committee](https://github.com/open-telemetry/community/blob/main/community-members.md#technical-committee)
 
-_Find more about the approver role in [community repository](https://github.com/open-telemetry/community/blob/master/community-membership.md#approver)._
+For more information about the maintainer role, see the [community repository](https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md#maintainer).
 
-### Maintainers
+### Approvers
 
-- OpenTelemetry Technical Committee ([@open-telemetry/technical-committee](https://github.com/orgs/open-telemetry/teams/technical-committee))
-  - See [open-telemetry/community](https://github.com/open-telemetry/community/blob/main/community-members.md#technical-committee) for the current list.
+- [OpenTelemetry Specification Approvers](https://github.com/open-telemetry/community/blob/main/community-members.md#specifications-and-proto)
 
-_Find more about the maintainer role in [community repository](https://github.com/open-telemetry/community/blob/master/community-membership.md#maintainer)._
+For more information about the approver role, see the [community repository](https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md#approver).