Fix link for Getting Started command (#16863)

* Fix link for Getting Started command

* Fix comment

src/sql/workbench/update/electron-browser/gettingStarted.ts

@@ -0,0 +1,38 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import nls = require('vs/nls');
+import { Action } from 'vs/base/common/actions';
+import product from 'vs/platform/product/common/product';
+import { URI } from 'vs/base/common/uri';
+import { IOpenerService } from 'vs/platform/opener/common/opener';
+import { MenuRegistry, MenuId } from 'vs/platform/actions/common/actions';
+
+export class ShowGettingStartedAction extends Action {
+	static ID = 'update.showGettingStarted';
+	static LABEL = nls.localize('showReleaseNotes', "Show Getting Started");
+
+	constructor(
+		id = ShowGettingStartedAction.ID,
+		label = ShowGettingStartedAction.LABEL,
+		@IOpenerService private openerService: IOpenerService
+	) {
+		super(id, label, undefined, true);
+	}
+
+	override run(): Promise<any> {
+		const uri = URI.parse(product.gettingStartedUrl);
+		return this.openerService.open(uri);
+	}
+}
+
+MenuRegistry.appendMenuItem(MenuId.MenubarHelpMenu, {
+	group: '1_welcome',
+	command: {
+		id: ShowGettingStartedAction.ID,
+		title: nls.localize({ key: 'miGettingStarted', comment: ['&& denotes a mnemonic'] }, "Getting &&Started")
+	},
+	order: 1
+});