fix command name for toggle centered layout

src/vs/workbench/browser/actions/toggleCenteredLayout.ts

@@ -46,7 +46,7 @@ MenuRegistry.appendMenuItem(MenuId.MenubarAppearanceMenu, {
 MenuRegistry.appendMenuItem(MenuId.MenubarLayoutMenu, {
 	group: '2_layouts',
 	command: {
-		id: 'workbench.action.editorLayoutCentered',
+		id: 'workbench.action.toggleCenteredLayout',
 		title: nls.localize({ key: 'miCenteredEditorLayout', comment: ['&& denotes a mnemonic'] }, "&&Centered")
 	},
 	order: 2