fix: improve doc link navigation and tree display

- Fix link resolution with proper relative/absolute path handling
- Improve link styling with underline decoration
- Hide leaf nodes from tree, only show directories
- Fix log file path for packaged app

docs/api/rhi/command-list/set-blend-factor.md

@@ -0,0 +1,21 @@
+# RHICommandList::SetBlendFactor
+
+```cpp
+virtual void SetBlendFactor(const float factor[4]) = 0;
+```
+
+设置混合因子。
+
+**参数：**
+- `factor` - 混合因子数组 [r, g, b, a]
+
+**示例：**
+
+```cpp
+float factor[4] = {0.5f, 0.5f, 0.5f, 1.0f};
+cmdList->SetBlendFactor(factor);
+```
+
+## 相关文档
+
+- [RHICommandList 总览](command-list.md) - 返回类总览