docs: fix example for --with option combined with --without (#6318)

The current "Managing Dependencies" documentation contains an error at
[Installing group dependencies](https://python-poetry.org/docs/managing-dependencies/#installing-group-dependencies)

Within the warning concerning the combined use of  `--with` and `--without` the parameters were swapped.

- [ ] Added **tests** for changed code.
- [x] Updated **documentation**

Co-authored-by: Philipp Quenzel <[email protected]>
Co-authored-by: finswimmer <[email protected]>

docs/managing-dependencies.md

@@ -142,10 +142,10 @@ poetry install --with docs
 
 {{% warning %}}
 When used together, `--without` takes precedence over `--with`. For example, the following command
-will only install the dependencies specified in the `test` group.
+will only install the dependencies specified in the optional `test` group.
 
 ```bash
-poetry install --with docs --without test,docs
+poetry install --with test,docs --without docs
 ```
 {{% /warning %}}