In FAQ section 13.13, the code appears with more dashes

In FAQ section 13.13, the code appears with 3 more dashes at the top and bottom respectively.
```
---
@Bean
@Primary
fun swaggerUiConfig(config: SwaggerUiConfigProperties): SwaggerUiConfigProperties {
    config.showCommonExtensions = true
    config.queryConfigEnabled = true
    return config
}
---
```