Add user feedback on Nexent platform improvements

Added a positive remark about the Nexent platform and its medical query architecture.

Author: aschenmo

doc/docs/zh/opensource-memorial-wall.md

@@ -607,3 +607,4 @@ Nexent开发者加油
 ::: info jinhb - 2025-12-03
 祝nexent平台越来越好
 :::
+通过 Nexent 实现了医学查询架构的完美落地，这套框架非常完美。多智能体编排体验极佳！