Merge pull request #2834 from emqx/fix-link-redis-authz

Fix link in Redis authz doc

Author: Meggielqk

en_US/access-control/authz/redis.md

@@ -12,7 +12,7 @@ Knowledge about [basic EMQX authorization concepts](./authz.md)
 
 Users need to provide a query template that returns the following data:
 
-- `topic`: Specifies the topic that the rule applies to, which can use topic filters and [topic placeholders](https://claude.ai/chat/authz.md#topic-placeholders).
+- `topic`: Specifies the topic that the rule applies to, which can use topic filters and [topic placeholders](./authz.md#topic-placeholders).
 - `action`: Specifies the actions that the rule applies to, available options are `publish`, `subscribe`, and `all`.
 - `qos` (Optional) Specifies the QoS levels that the current rule applies to. Value options are `0`, `1`, `2`. It can also be a number array to specify multiple QoS levels. The default is all QoS levels.
 - `retain`: (Optional) Specifies whether the rule supports retained messages. Value options are `true`, `false`. The default is to allow retained messages.