fix: fix bug

common/constants.go

@@ -186,7 +186,7 @@ const (
 const (
 	ChannelTypeUnknown        = 0
 	ChannelTypeOpenAI         = 1
-	ChannelTypeAPI2D          = 2
+	ChannelTypeMidjourney     = 2
 	ChannelTypeAzure          = 3
 	ChannelTypeCloseAI        = 4
 	ChannelTypeOpenAISB       = 5