限流&熔断页面引用的“Dubbo Sentinel 流量控制”链接不存在

在[限流&熔断页面](https://dubbo-next.staged.apache.org/zh-cn/overview/what/core-features/traffic/circuit-breaking/)，”Dubbo Sentinel 流量控制“链接进入后提示404

Start at the linked traffic and circuit-breaking page and inspect the “Dubbo Sentinel 流量控制” link. Trace the page source to identify the broken destination, then update or remove the link according to the available documentation and verify that it no longer returns 404.

Written by the indexing model from the issue text.