book.json

{
    "plugins": [ "theme-api" , "image-captions" , "-lunr" , "mermaid"],
    "pluginsConfig": {
        "image-captions": {
            "caption": "_CAPTION_"
        },
        "theme-api": {
            "theme": "light",
            "languages": [
                {
                    "lang":"player",
                    "name":"Player",
                    "default": true
                },
                {
                    "lang":"ol",
                    "name":"Open Legend"
                },
                {
                    "lang":"dnd",
                    "name":"D&D"
                },
                {
                    "lang":"fc",
                    "name":"Fate(core)"
                },
                {
                    "lang":"fa",
                    "name":"Fate(accel)"
                },
                {
                    "lang":"dm",
                    "name":"DM"
                }
            ]
        }
    }
}