rename tm.events.type to just tm.event

types/events.go

@@ -136,7 +136,7 @@ type EventDataVote struct {
 
 const (
 	// EventTypeKey is a reserved key, used to specify event type in tags.
-	EventTypeKey = "tm.events.type"
+	EventTypeKey = "tm.event"
 	// TxHashKey is a reserved key, used to specify transaction's hash.
 	// see EventBus#PublishEventTx
 	TxHashKey = "tx.hash"