Incorrect OIDC configuration example

example:
https://github.com/cesanta/docker_auth/blob/main/examples/reference.yml#L208

**label_claims**

source
https://github.com/cesanta/docker_auth/blob/main/auth_server/authn/oidc_auth.go#L63

```
// []string to add as labels.
LabelsClaims []string `yaml:"labels_claims,omitempty"`
```

label**s**_claims