[docs] update maintainers (#1045)

Author: Alex Boten

README.md

@@ -98,14 +98,14 @@ Approvers ([@open-telemetry/python-approvers](https://github.com/orgs/open-telem
 - [Alex Boten](https://github.com/codeboten), Lightstep
 - [Nathaniel Ruiz Nowell](https://github.com/NathanielRN), AWS
 - [Owais Lone](https://github.com/owais), Splunk
-- [Srikanth Chekuri](https://github.com/lonewolf3739)
 
 *Find more about the approver role in [community repository](https://github.com/open-telemetry/community/blob/main/community-membership.md#approver).*
 
 Maintainers ([@open-telemetry/python-maintainers](https://github.com/orgs/open-telemetry/teams/python-maintainers)):
 
 - [Diego Hurtado](https://github.com/ocelotl), Lightstep
 - [Leighton Chen](https://github.com/lzchen), Microsoft
+- [Srikanth Chekuri](https://github.com/srikanthccv)
 
 *Find more about the maintainer role in [community repository](https://github.com/open-telemetry/community/blob/main/community-membership.md#maintainer).*