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/threading/readwritelock/writeunlock.md

@@ -0,0 +1,32 @@
+# ReadWriteLock::WriteUnlock
+
+```cpp
+void WriteUnlock()
+```
+
+释放写锁。唤醒所有等待中的读者和下一个写者。
+
+**参数：** 无
+
+**返回：** 无
+
+**复杂度：** O(1)
+
+**注意：** 必须在持有写锁的线程中调用。
+
+**示例：**
+
+```cpp
+ReadWriteLock rwLock;
+std::unordered_map<String, int> cache;
+
+void UpdateCache(const String& key, int value) {
+    rwLock.WriteLock();
+    cache[key] = value;
+    rwLock.WriteUnlock();
+}
+```
+
+## 相关文档
+
+- [ReadWriteLock 总览](readwritelock.md) - 返回类总览