Drop --token from the hand-started worker examples

The worker reads FLUKSIO_WORKER_TOKEN itself; on the command line the
token shows in ps. The --token row in the options table says so.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013GAeg4Jo6xjZzjwy9QDWMQ

docs/getting-started/facility-automation.md

@@ -258,13 +258,12 @@ curl -X POST https://api.${DOMAIN}/api/v1/workers/tokens \
 The labels are signed into it, so the worker can repeat them with `--labels`
 but not change them.
 
-On the other machine:
+On the other machine, with that token in `FLUKSIO_WORKER_TOKEN`:
 
 ```sh
 pip install fluksio-worker
 fluksio-worker \
   --url wss://api.${DOMAIN}/api/v1/workers/attach \
-  --token "$WORKER_TOKEN" \
   --labels shed,gpio \
   --parallel 2
 ```