In NeoVim/Coc, where to put prettier.arrowParens in coc-settings.json? - prettier

Question

I have a global installation of prettier (yarn classic) and I have a coc-settings.json like below for NeoVim. I 've copied the entire content here, because someone's gonna ask eventually anyway, if can copy the whole thing here.
At the end there's the entry "prettier.arrowParens": "always" which isn't recognized by Prettier.
Is it located in the wrong section?
"html.filetypes": ["hbs", "handlebars", "html"],
"eslint.packageManager": "yarn",
"eslint.alwaysShowStatus": true,
"eslint.validate": ["svelte"],
"eslint.options": {
"overrideConfig": {
"env": {
"browser": true,
"commonjs": true,
"es2021": true,
"node": true
},
"plugins": ["import", "svelte3"],
"extends": ["eslint:recommended", "plugin:import/recommended"],
"parserOptions": {
"ecmaVersion": "latest",
"sourceType": "module"
},
"overrides": [
{
"files": ["*.svelte"],
"processor": "svelte3/svelte3"
}
],
"rules": {
"svelte3/no-invalid-interp": "error",
"svelte3/no-unknown-binding": "error",
"svelte3/no-unknown-export": "error",
"svelte3/no-unknown-import": "error",
"svelte3/no-unused-components": "error",
"svelte3/no-unused-css": "error",
"svelte3/no-unused-globals": "error",
"svelte3/no-unused-mixins": "error",
"svelte3/no-unused-store-definitions": "error",
"no-unused-vars": [
"error",
{ "vars": "all", "args": "after-used", "ignoreRestSiblings": false }
],
"svelte3/no-void-component": "error",
"svelte3/no-void-elements": "error",
"svelte3/no-void-import": "error",
"svelte3/no-void-return": "error",
"svelte3/no-void-tag": "error",
"svelte3/no-void-template": "error",
"svelte3/no-void-text": "error",
"svelte3/no-void-text-content": "error",
"svelte3/no-void-text-content-single": "error",
"svelte3/no-void-text-content-single-line": "error",
"svelte3/no-void-text-content-single-line-no-space": "error"
}
}
},
"solargraph.useBundler": false,
"solargraph.commandPath": "~/.rbenv/shims/solargraph",
"solargraph.bundlerPath": "~/.rbenv/shims/bundle",
"solargraph.formatting": true,
"solargraph.diagnostics": true,
"solargraph.checkGemVersion": true,
"svelte.enable-ts-plugin": true,
"prettier.onlyUseLocalVersion": false,
"prettier.singleQuote": true,
"prettier.arrowParens": "always"
}