electron: fix comment (#13042)

electron/github-electron-renderer-tests.ts

@@ -257,6 +257,12 @@ webview.addEventListener('ipc-message', function(event) {
 webview.send('ping');
 webview.capturePage((image) => { console.log(image); });
 
+{
+    const opened: boolean = webview.isDevToolsOpened();
+    const focused: boolean = webview.isDevToolsFocused();
+    const focused2: boolean = webview.getWebContents().isFocused();
+}
+
 // In guest page.
 ipcRenderer.on('ping', function() {
 	ipcRenderer.sendToHost('pong');

electron/index.d.ts

@@ -5528,7 +5528,7 @@ declare namespace Electron {
 		closeDevTools(): void;
 		/**
 		 * @returns Whether guest page has a DevTools window attached.
-		 
+		 */
 		isDevToolsOpened(): boolean;
 		/**
 		 * @returns Whether DevTools window of guest page is focused.