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/debug/logger/removesink.md

@@ -0,0 +1,29 @@
+# Logger::RemoveSink
+
+```cpp
+void RemoveSink(ILogSink* sink)
+```
+
+从日志系统移除指定的输出目标。通过指针查找并移除对应的 Sink，Logger 不再向该目标发送日志。
+
+**参数：**
+- `sink` - 要移除的日志输出目标指针
+
+**复杂度：** O(n)，n 为注册的 Sink 数量
+
+**示例：**
+
+```cpp
+#include <XCEngine/Debug/Logger.h>
+
+auto fileSink = std::make_unique<XCEngine::Debug::FileLogSink>("app.log");
+XCEngine::Debug::FileLogSink* rawPtr = fileSink.get();
+XCEngine::Debug::Logger::Get().AddSink(std::move(fileSink));
+// 稍后移除
+XCEngine::Debug::Logger::Get().RemoveSink(rawPtr);
+```
+
+## 相关文档
+
+- [Logger 总览](logger.md) - 返回类总览
+- [ILogSink](../ilogsink/ilogsink.md) - 日志输出接口