Change WCS example links from motherlode to thredds.
Change WCS example links from motherlode to thredds.

Update WCS client list

Unidata/netcdf-java,Unidata/netcdf-java,Unidata/netcdf-java,Unidata/netcdf-java,Unidata/netcdf-java,Unidata/netcdf-java,Unidata/netcdf-java