Update comment

The previous comment wasn't quite accurate. This is perhaps now over-documented, but I consider that a good thing.

Best viewed with whitespace ignored.

playbooks/deploy.yml

@@ -10,8 +10,9 @@
 # github_key: specify a forked branch instead. Eg:
 #  -e "github_key=jibees:upgrade-node-version"
 #
-#  This playbook is copied onto staging servers with setup_remote_deployment so they can deploy to
-#  themselves. Re-run setup_remote_deployment to copy the latest from master.
+# This playbook is copied onto staging servers with setup_remote_deployment so they can deploy to
+# themselves. It is executed via /home/ofn-deploy/deploy script, which ensures latest version of
+# ofn-install is pulled.
 
 - name: deploy
   hosts: ofn_servers