Amend: put `.string()` back

I have no idea why it disappeared

main.go

@@ -606,7 +606,7 @@ func handleMessage(api keybase.ChatAPI) {
 			if api.Msg.Channel.MembersType == channel.MembersType && cleanChannelName(api.Msg.Channel.Name) == channel.Name {
 				if channel.MembersType == keybase.USER || channel.MembersType == keybase.TEAM && channel.TopicName == api.Msg.Channel.TopicName &&
 					channel.TopicType == api.Msg.Channel.TopicType {
-					printToView("Chat", formatOutput(api))
+					printToView("Chat", formatOutput(api).string())
 					chat := k.NewChat(channel)
 					lastMessage.ID = api.Msg.ID
 					chat.Read(api.Msg.ID)