[visad] Update to VisAD library - correction

Oops, as Curtis pointed out the URL for the Javadoc should be:

<http://www.ssec.wisc.edu/visad-docs/javadoc/>

(visad-docs and not -doc as my original note said.....sorry about that!)

--
Tom Whittaker
University of Wisconsin-Madison
Space Science & Engineering Center (SSEC)
Cooperative Institute for Meteorological Satellite Studies (CIMSS)
1225 W. Dayton Street
Madison, WI  53706  USA
ph: +1 608 262 2759