Fix py-spy usage instructions

Author: grafolean

docker-compose.yml

@@ -110,9 +110,9 @@ services:
     volumes:
       - shared-grafolean:/shared-grafolean
     # To use py-spy:
-    #   - $ docker exec -ti grafolean-newflow-writer bash
+    #   - $ docker exec -ti grafolean-netflow-writer bash
     #   - # pip install py-spy
-    #   - # py-spy -n -o /tmp/prof/out.svg --pid 1
+    #   - # py-spy record -n -o /tmp/prof/out.svg --pid 1
     # But first, these 3 lines below must be enabled, to add a volume and capabilities: (careful not to add spaces!)
     #  - /tmp/prof/:/tmp/prof/
     #cap_add: