docs: add docs/internal/ entry to README documentation tables

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Winda0001

README.md

@@ -230,6 +230,7 @@ A: Dupilumab is recommended as first-line biologic therapy over JAK inhibitors
 | Resource | Location |
 |----------|----------|
 | Architecture design | [`docs/`](docs/) |
+| Internal development notes | [`docs/internal/`](docs/internal/) |
 | Change history | [`CHANGELOG.md`](CHANGELOG.md) |
 | Quick-start guide | [`QUICKSTART.md`](QUICKSTART.md) |
 | Prompt templates | [`src/config/prompts/`](src/config/prompts/) |
@@ -507,6 +508,7 @@ A: 对于重度特应性皮炎青少年患者，推荐度普利尤单抗作为
 | 资源 | 位置 |
 |------|------|
 | 架构设计文档 | [`docs/`](docs/) |
+| 内部开发记录 | [`docs/internal/`](docs/internal/) |
 | 变更记录 | [`CHANGELOG.md`](CHANGELOG.md) |
 | 快速开始指南 | [`QUICKSTART.md`](QUICKSTART.md) |
 | 提示词模板 | [`src/config/prompts/`](src/config/prompts/) |