Fix typo in Event class

Summary:
Just a fix of a typo

changelog: [internal] internal

Reviewed By: javache

Differential Revision: D31076782

fbshipit-source-id: 192de92ba080a565acd67e038b370917ea9fcddc

ReactAndroid/src/main/java/com/facebook/react/uimanager/events/Event.java

@@ -174,7 +174,7 @@ public abstract class Event<T extends Event> {
     WritableMap eventData = getEventData();
     if (eventData == null) {
       throw new IllegalViewOperationException(
-          "Event: you must return a valid, non-null value from `getEventData`, or override `dispatch` and `disatchModern`. Event: "
+          "Event: you must return a valid, non-null value from `getEventData`, or override `dispatch` and `dispatchModern`. Event: "
               + getEventName());
     }
     rctEventEmitter.receiveEvent(getViewTag(), getEventName(), eventData);