Confusing error message while using `minItems`

I could be using this wrong but I'm validating a schema that has `minItems: 1` in it like this:
```javascript
{
operators: {
type: 'array',
minItems: 1,
items: {...}
}
}
```

and it's leading to an awkward error message like this: `/operators: minItems must NOT have fewer than 1 items` when ideally it would be more like `/operators: must NOT have fewer than 1 items`

It looks like thats due to how `DefaultValidationError` => `getError()` is putting a `keyword` in front of the message but in this case the keyword is making the error more confusing and less human readable.

Let me know if there is something I'm missing.