Fix outdated community membership link (#3500)

Co-authored-by: otelbot <[email protected]>

Author: opentelemetrybot

README.md

@@ -91,7 +91,7 @@ For edit access, get in touch on
 * [Marc Alff](https://github.com/marcalff), Oracle
 * [Tom Tan](https://github.com/ThomsonTan), Microsoft
 
-For more information about the maintainer role, see the [community repository](https://github.com/open-telemetry/community/blob/main/community-membership.md#maintainer).
+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
 
@@ -100,7 +100,7 @@ For more information about the maintainer role, see the [community repository](h
 * [Pranav Sharma](https://github.com/psx95), Google
 * [WenTao Ou](https://github.com/owent), Tencent
 
-For more information about the approver role, see the [community repository](https://github.com/open-telemetry/community/blob/main/community-membership.md#approver).
+For more information about the approver role, see the [community repository](https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md#approver).
 
 ### Emeritus Maintainer/Approver/Triager