Updated dashkard: Numbers Keyboard Shortcuts

Thanks to user Barry for pointing out an oversight on the dashkard for Numbers. The Navigation section lists keyboard shortcuts that use the page-up, page-down, home and end keys, which are only available on full-sized keyboards but not on the MacBooks and the Apple Wireless Keyboard. Fortunately, you can use the fn key with the arrow keys instead. The updated dashkard for Numbers lists these alternative shortcuts.