veyron2/vdl/codgen/java: fix method name in Java client stubs.
veyron2/vdl/codgen/java: fix method name in Java client stubs.

Change-Id: I6a7ef566ea65e9b15e30a09579af370ea7d4b10f

vanadium/go.v23,vanadium/go.v23,vanadium/go.v23