docs: Can I show or hide text based on whether a list item has been selected

**Description**
I have a list of values as a variable / parameter
```
platforms:
type: array
values:
- macos
- web
- android
default:
- macos
prompt: platforms
```

Can I check whether that the item has been selected or not?
```
{{#if platforms contains 'macos'}}
# Code that should only be executed on macOS
{{/if}}
```