WS-2705: updating dockerhub ref

Author: Yaison

DEVELOPER.md

@@ -18,7 +18,7 @@ Here are the old instructions from examples/README.
 ##### Docker
 A Docker image for running the examples against the compiled source library is available on Docker Hub.
 
-Command: `docker run -e API_KEY=api-key -v "<binding root directory>:/source" rosetteapi/docker-nodejs`
+Command: `docker run -e API_KEY=api-key -v "<binding root directory>:/source" rosette/docker-nodejs`
 
 Additional environment settings:
 `-e ALT_URL=<alternative URL>`