tweak settings wording

src/vs/workbench/electron-browser/main.contribution.ts

@@ -60,7 +60,7 @@ configurationRegistry.registerConfiguration({
 		'window.zoomLevel': {
 			'type': 'number',
 			'default': 0,
-			'description': nls.localize('zoomLevel', "Adjust the zoom level of the window. The original size is 0 and each increment above or below represents zooming 20% larger or smaller.")
+			'description': nls.localize('zoomLevel', "Adjust the zoom level of the window. The original size is 0 and each increment above (e.g. 1) or below (e.g. -1) represents zooming 20% larger or smaller. You can also enter decimals to adjust the zoom level with a finer granularity.")
 		}
 	}
 });