docs: add more fiddles for launch in fiddle feature

docs/api/accelerator.md

@@ -15,7 +15,7 @@ Shortcuts are registered with the [`globalShortcut`](global-shortcut.md) module
 using the [`register`](global-shortcut.md#globalshortcutregisteraccelerator-callback)
 method, i.e.
 
-```javascript
+```javascript fiddle='docs/fiddles/accelerator
 const { app, globalShortcut } = require('electron')
 
 app.on('ready', () => {

docs/api/screen.md

@@ -27,7 +27,7 @@ app.on('ready', () => {
 
 Another example of creating a window in the external display:
 
-```javascript
+```javascript fiddle='docs/fiddles/screen/fit-screen-external
 const { app, BrowserWindow, screen } = require('electron')
 
 let win

docs/fiddles/accelerator/main.js

@@ -0,0 +1,28 @@
+// Adding a global shortcut to electron
+//
+// For more info, see:
+// https://electronjs.org/docs/api/screen
+
+const { app, globalShortcut, BrowserWindow } = require('electron')
+
+let mainWindow = null;
+
+app.on('ready', () => {
+  // Register a 'CommandOrControl+Y' shortcut listener.
+  globalShortcut.register('CommandOrControl+Y', () => {
+    // Do stuff when Y and either Command/Control is pressed.
+    console.log('shortcut...');
+  });
+
+  mainWindow = new BrowserWindow({
+    width: 800,
+    height: 600,
+    webPreferences: {
+      nodeIntegration: true
+    }
+  });
+
+  // and load the index.html of the app.
+  mainWindow.loadFile('index.html');
+})
+

docs/fiddles/screen/fit-screen-external/main.js

@@ -0,0 +1,24 @@
+// Creating a window in the external display
+//
+// For more info, see:
+// https://electronjs.org/docs/api/screen
+
+const electron = require('electron')
+const { app, BrowserWindow } = require('electron')
+
+let win
+
+app.on('ready', () => {
+  let displays = electron.screen.getAllDisplays()
+  let externalDisplay = displays.find((display) => {
+    return display.bounds.x !== 0 || display.bounds.y !== 0
+  })
+
+  if (externalDisplay) {
+    win = new BrowserWindow({
+      x: externalDisplay.bounds.x + 50,
+      y: externalDisplay.bounds.y + 50
+    })
+    win.loadURL('https://electronjs.org')
+  }
+})

docs/tutorial/security.md

@@ -27,18 +27,8 @@ see [SECURITY.md](https://github.com/electron/electron/tree/master/SECURITY.md)
 
 ## Chromium Security Issues and Upgrades
 
-While Electron strives to support new versions of Chromium as soon as possible,
-developers should be aware that upgrading is a serious undertaking - involving
-hand-editing dozens or even hundreds of files. Given the resources and
-contributions available today, Electron will often not be on the very latest
-version of Chromium, lagging behind by several weeks or a few months.
-
-We feel that our current system of updating the Chromium component strikes an
-appropriate balance between the resources we have available and the needs of
-the majority of applications built on top of the framework. We definitely are
-interested in hearing more about specific use cases from the people that build
-things on top of Electron. Pull requests and contributions supporting this
-effort are always very welcome.
+Electron keeps up to date with alternating Chromium releases. For more information,
+see the [Electron Release Cadence blog post](https://electronjs.org/blog/12-week-cadence).
 
 ## Security Is Everyone's Responsibility