Incorrect command in /help for chat.editMode setting

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

macOS 15.6.1 (24G90)

### Expected behaviour

In the `/help` output under `chat.editMode`, it should show the command to change the edit mode setting, something like: `Change using: q settings chat.editMode vim`

### Actual behaviour

The help text shows an incorrect command that references the wrong setting which appears to be copy-pasted from the Fuzzy search session above:
`Change using: q settings chat.skimCommandKey x`

### Steps to reproduce

1. Open Q CLI chat session
2. Type /help
3. Notice the command references `chat.skimCommandKey` in both Fuzzy search and editMode section.

### Environment

```yaml

[q-details]
version = "1.15.0"
hash = "eb8db5c635fc469f3bd94ead16bb4bfb32d7443b"
date = "2025-09-02T17:57:24.662205Z (13d ago)"
variant = "full"
```

Beginne bei der CLI-/help-Ausgabe für die Einstellung chat.editMode und suche nach dem angezeigten `chat.skimCommandKey`-Text, wobei du ihn mit dem benachbarten Fuzzy-Sucheintrag vergleichst. Fertig ist es, wenn `/help` `q settings chat.editMode vim` oder den entsprechenden Editiermodus-Befehl im Abschnitt chat.editMode anzeigt, ohne den Fuzzy-Suchbefehl zu ändern.

Vom Indexierungsmodell aus dem Issue-Text verfasst.