// ==UserScript==
// @name         Notion Desktop Mode
// @version      0.1.0
// @match        *://*.notion.so/*
// @run-at       document-start
// ==/UserScript==

var codeToInject = 'Object.defineProperty(navigator, "platform", {' +
    'get: function () { return "Linux x86_64"; }, set: function (a) {} });';
var script = document.createElement('script');
script.appendChild(document.createTextNode(codeToInject));
(document.head || document.documentElement).appendChild(script);
script.parentNode.removeChild(script);