[#4481] ticket:100 Fix test.
[#4481] ticket:100 Fix test.

Change @expose('json') to @expose('json:') to prevent test fail.

apache/allura,apache/incubator-allura,apache/allura,lym/allura-git,leotrubach/sourceforge-allura,lym/allura-git,heiths/allura,heiths/allura,heiths/allura,lym/allura-git,leotrubach/sourceforge-allura,Bitergia/allura,leotrubach/sourceforge-allura,heiths/allura,Bitergia/allura,apache/incubator-allura,apache/allura,apache/incubator-allura,Bitergia/allura,lym/allura-git,Bitergia/allura,Bitergia/allura,apache/allura,apache/allura,leotrubach/sourceforge-allura,lym/allura-git,apache/incubator-allura,heiths/allura