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/opengl/command-queue/get-completed-value.md

@@ -0,0 +1,19 @@
+# OpenGLCommandQueue::GetCompletedValue
+
+```cpp
+uint64_t GetCompletedValue()
+```
+
+获取已完成的值。
+
+**返回：** 已完成的围栏值
+
+**示例：**
+
+```cpp
+uint64_t value = commandQueue->GetCompletedValue();
+```
+
+## 相关文档
+
+- [OpenGLCommandQueue](command-queue.md) - 返回类总览