better commands and copy

dash-apm-python/step_10.md

@@ -2,6 +2,6 @@ In this phase we are going to introduce a service failure.
 
 Open a new terminal window and run:
 
-`docker-compose stop sensors`
+`cd /tracing-workshop && docker-compose stop sensors`{{copy}}
 
 to cause the `sensors-api` service to stop.

dash-apm-python/step_11.md

@@ -1,5 +1,5 @@
 Before continuing please be sure to restart the `sensors-api` service.
 
-`docker-compose start sensors`.
+`docker-compose start sensors`{{copy}}
 
 You may close the new terminal window you have opened in the previous step.