example code bug fix
example code bug fix

example code bug fix
```
    limiter := rate.NewLimiter(ring)
    // Optional.
    limiter.Fallback = timerate.NewLimiter(rate.Every(time.Second), 100)
```

```
	limiter := redis_rate.NewLimiter(ring)
	// Optional.
	limiter.Fallback = rate.NewLimiter(rate.Every(time.Second), 100)

```
go-redis/redis_rate