## Description
Fix typo when targeting the `test` stage - it was mentioning a
non-exisiting `--target-test` parameter which could confuse new users:
`unknown flag: --target-test`.
It should be `--target test` or `--target=test`. I went with `--target
test` since that's what is used in the rest of the guide.
## Related issues or tickets
Introduced in https://github.com/docker/docs/pull/19390
## Reviews
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- [ ] Technical review
- [ ] Editorial review
- [ ] Product review
Igor Klimer
Gerardo Lopez
David Karlsson