Updated link to the online (MSDN) version of the Silverlight SDKs for 1.0 and 1.1

A little housecleaning. The News link to the MSDN source for the SDK (on the right hand side) somehow was mistargeted. I've changed it to a "go link" so that when it breaks again, I can blame others :-)

Just to put it in your face: Silverlight SDK on MSDN