Simplify Higress description and add official website link

- Add link to Higress official website (https://higress.cn/en/)
- Simplify description to focus on key features
- Fix typo in the description

Change-Id: I5f1869d5cfbcc04674b4375fd82f4bf34b303280
Co-developed-by: Cursor <noreply@cursor.com>

Author: johnlanni

docs/versioned/install/README.md

@@ -103,7 +103,7 @@ If you don't have an ingress that meets the requirements, Knative provides [net-
 
 - Higress (Third-party integration)
 
-    A next-generation cloud-native gateway that integrates traffic management, security protection, and microservices capabilities. Higress provides enhanced traffic governance, authentication, WAF protection, and observability for Knative services with WASM plugin extensibility. See [Higress: A Best Practice for Knative Ingress Gateway](https://www.alibabacloud.com/blog/higress-a-best-practice-for-knative-ingress-gateway_600549).
+     [Higress](https://higress.cn/en/) provides enhanced traffic governance, authentication, WAF protection, and observability for Knative services with WASM plugin extensibility. See [Higress: A Best Practice for Knative Ingress Gateway](https://www.alibabacloud.com/blog/higress-a-best-practice-for-knative-ingress-gateway_600549).
 
     !!! note
         This integration is not managed by the Knative community.