Update company affiliation for jack-berg (#2348)

Author: jack-berg

README.md

@@ -54,7 +54,7 @@ See [CONTRIBUTING.md](CONTRIBUTING.md).
 
 ### Maintainers
 
-- [Jack Berg](https://github.com/jack-berg), New Relic
+- [Jack Berg](https://github.com/jack-berg), Grafana Labs
 - [Jason Plumb](https://github.com/breedx-splk), Splunk
 - [Lauri Tulmin](https://github.com/laurit), Splunk
 - [Trask Stalnaker](https://github.com/trask), Microsoft
@@ -63,7 +63,7 @@ For more information about the maintainer role, see the [community repository](h
 
 ### Approvers
 
-- [Jay DeLuca](https://github.com/jaydeluca), Grafana
+- [Jay DeLuca](https://github.com/jaydeluca), Grafana Labs
 - [John Watson](https://github.com/jkwatson), Cloudera
 
 For more information about the approver role, see the [community repository](https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md#approver).