[amsat-bb] Download link issue for "Getting Started with Amateur Satellites"

Hi,

As a heads up to anyone trying to download this after getting a new membership, the link (at least for me on Firefox on Windows 7) does not provide the full file name, only "Getting". Importantly, it doesn't have pdf as the extension. If you just add that to the file after downloading it, it will open fine.

Thanks everyone for all your work.

John, KG4AKV