## Description
https://docs.docker.com/reference/compose-file/deploy/#placement
In this section, `node.labels` must be specified. Also, it must be `==`
and not a simple `=`, an error occurs without it:
```bash
failed to update service myapp_redis: Error response from daemon: rpc error: code = Unknown desc = constraint expected one operator from ==, !=
```
<!--Delete sections as needed -->
## Description
Looks larger than it is: -
- A follow-up to comments on https://github.com/docker/docs/pull/21639
- Deals with hotjar issue
https://docker.slack.com/archives/C04BMTUC41E/p1734970724382829
- Vale freshness
## Related issues or tickets
<!-- Related issues, pull requests, or Jira tickets -->
## Reviews
<!-- Notes for reviewers here -->
<!-- List applicable reviews (optionally @tag reviewers) -->
- [ ] Technical review
- [ ] Editorial review
- [ ] Product review
---------
Co-authored-by: Sarah Sanders <sarah.sanders@docker.com>
