docs(docker-compose): Update README.md with example directory structure

docker-compose/examples/grafana/env/fqdn_context.env.example

@@ -1,4 +1,4 @@
-CONTEXT=cncf
+CONTEXT=ux_vilnius
 
 
 
@@ -10,14 +10,6 @@ CONTEXT=cncf
 
 
 
-# A ${LOCATION} var is usually not needed. It may be helpful when a ${CONTEXT}
-# extends over more than one location e.g. to bind-mount location-specific
-# config files or certificates into a container.
-# ---
-# LOCATION=
-
-
-
 # Feel free to leave defaults. They apply while these vars are commented out
 # ---
 # RESTARTPOLICY=unless-stopped