WMS url needs an update

[kungfujohnjon]

OceanWebGLDemo/src/org/glob3/mobile/client/OceanWebGLDemo.java

For the marine-geo.org topo layer, please use the new GMRT url for this service: https://www.gmrt.org/services/mapserver/wms_merc?request=GetCapabilities&service=WMS&version=1.3.0