Fix type.

Author: jmdobry

logging/test/sinks.test.js

@@ -117,7 +117,7 @@ describe('logging:sinks', function () {
       assert.equal(sample.mocks.sink.create.firstCall.args.length, 2, 'method received 2 arguments');
       assert.deepEqual(sample.mocks.sink.create.firstCall.args[0], {
         destination: sample.mocks.dataset
-      }, 'add received options');
+      }, 'method received options');
       assert(callback.calledOnce, 'callback called once');
       assert.equal(callback.firstCall.args.length, 2, 'callback received 2 arguments');
       assert.ifError(callback.firstCall.args[0], 'callback did not receive error');