Update sandbox README to point to the user guide. (#1009)

Author: bcipriano

sandbox/README.md

@@ -1,31 +1,16 @@
 # OpenCue sandbox environment
 
-The sandbox environment provides a way to run a test OpenCue deployment. You
-can use the sandbox environment to run small tests or development work. The sandbox
-environment runs OpenCue components in separate Docker containers on your local
-machine.
+The sandbox environment provides a way to run a test OpenCue deployment. You can use the sandbox
+environment to run small tests or development work. The sandbox environment runs OpenCue components
+in separate Docker containers on your local machine.
 
 To learn how to run the sandbox environment, see
 https://www.opencue.io/docs/quick-starts/.
 
 ## Monitoring
 
-To get started with monitoring there is also an additional docker-compose which sets up 
+To get started with monitoring there is also an additional Docker compose file which sets up
 monitoring for key services.
 
-This can be started from the OpenCue root directory with:
-```bash
-docker-compose --project-directory . -f sandbox/docker-compose.yml -f sandbox/docker-compose.monitoring.yml up
-```
-
-Spins up a monitoring stack
-
-http://localhost:3000/
-
-login: admin   
-pass: admin
-
-### Loki logging
-
-Too use loki to store logs requires installing the docker drivers. see:
-https://grafana.com/docs/loki/latest/clients/docker-driver/
+To learn how to run the sandbox environment with monitoring,
+see https://www.opencue.io/docs/other-guides/monitoring-with-prometheus-loki-and-grafana/.