Follow-up I0eddaaed91: Fix mistake in class name
Follow-up I0eddaaed91: Fix mistake in class name

OO.ui.EventEmitter -> OO.EventEmitter

Change-Id: Iea1e6d18b62a4087330e3550c897b243e101f1ef

wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui,wikimedia/oojs-ui