fixed ordering

Author: datomo

schemas/message.fbs

@@ -162,16 +162,16 @@ table RegisterResponse{
     catalog: Catalog;
 }
 
-table EventWrapper {
-    event: Event;
-}
-
 union Event {
     Insert,
     Delete,
     Update,
 }
 
+table EventWrapper {
+    event: Event;
+}
+
 table Insert {
     value: ValueWrapper;
 }