properties.schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-03/schema",
  "id": "http://jsonschema.net",
  "properties": {
    "pluginLocations": {
      "type": "object",
      "properties": {
        "config": {
          "type": "object",
          "properties": {
            "_hljs": {
              "type": "object",
              "legend": "HighlightJS",
              "properties": {
                "_src": {
                  "type": "string",
                  "default": "",
                  "title": "HighlightJS URL",
                  "inputType": "Text",
                  "help": "URL where the highlightjs script can be found, such as the CDN links provided on https://highlightjs.org/download/. Leave empty to use bundled version (11.5.1)"
                }
              }
            }
          }
        }
      }
    }
  }
}