Off by one on the rolls

main.go

@@ -58,7 +58,7 @@ func parseParm(p string) (int, int, int) {
 func roll(num, sides int) int {
 	ret := 0
 	for ; num > 0; num-- {
-		ret += r.Intn(sides)
+		ret += r.Intn(sides) + 1
 	}
 	return ret
 }