The link of ZEN Expression in README.md is invalid(Not found?)

[ZEN Expression Language](https://gorules.io/docs/rules-engine/expression-language/) is invalid

<img width="1059" height="401" alt="Image" src="https://github.com/user-attachments/assets/3c604eda-c7a8-41fc-b0e7-316a7dca8936" />