Update jkwatson's company affiliation (open-telemetry#16115)

Author: jkwatson

README.md

@@ -143,7 +143,7 @@ For more information about the maintainer role, see the [community repository](h
 - [Jason Plumb](https://github.com/breedx-splk), Splunk
 - [Jay DeLuca](https://github.com/jaydeluca), Grafana Labs
 - [Jean Bisutti](https://github.com/jeanbisutti), Microsoft
-- [John Watson](https://github.com/jkwatson), Cloudera
+- [John Watson](https://github.com/jkwatson), Sublime Security
 - [Jonas Kunz](https://github.com/JonasKunz), Elastic
 - [Steve Rao](https://github.com/steverao), Alibaba
 - [Sylvain Juge](https://github.com/SylvainJuge), Elastic