use new cdecl.org API URL
use new cdecl.org API URL

The cdecl plugin was still pointing at the old `query.php` for
cdecl.org.  It looks like they've since moved over to using AWS
lambda, so they new API url is an AWS endpoint:

`https://xwd733f66f.execute-api.us-west-1.amazonaws.com/prod/cdecl_backend`

parkrrr/skybot,jmgao/skybot,rmmh/skybot,TeamPeggle/ppp-helpdesk,crisisking/skybot