change graph orientation

bot.go

@@ -964,7 +964,7 @@ func botGraphValue(m *tb.Message) {
 		i++
 	}
 
-	err := p.Save(4*vg.Inch, 6*vg.Inch, "/app/data/points.png")
+	err := p.Save(6*vg.Inch, 4*vg.Inch, "/app/data/points.png")
 	logErrorDebug(err, "Stats.ValueGraph : plot.Save")
 	if err != nil {
 		bot.SendChat(m.Chat.ID, fmt.Sprintf("plot.Save : %s", err))