[amsat-bb] Small update to KLA Track

If you use the G0KLA Sat Tracker then I have made a minor update to the display to improve the rendering. There are no other changes so this is very optional.

You can download it here: https://www.g0kla.com/klatrack/index.php

If you want to know what I fixed that is discussed here: https://www.g0kla.com/workbench/2019-10-08.php