Fix RHI documentation discrepancies and add missing doc files

Fixed incorrect links in OpenGL documentation:
- Fixed wrong links to threading/task-system docs for Initialize/Shutdown methods
- Fixed wrong links to buffer docs for GetNativeHandle methods
- Fixed wrong links to shader docs for Bind/Unbind methods
- Fixed wrong links to command-list docs for Clear/Reset/Close methods
- Fixed wrong links to buffer/get-size.md for width/height methods

Added missing documentation files:
- OpenGL buffer: bind.md, unbind.md, get-type.md, initialize.md
- OpenGL fence: initialize.md, reset.md
- OpenGL swap-chain: get-size.md, initialize.md
- OpenGL render-target-view: initialize.md, shutdown.md, bind.md, unbind.md, clear.md, get-size.md
- OpenGL depth-stencil-view: initialize.md, shutdown.md, bind.md, unbind.md, get-size.md
- OpenGL command-list: clear.md

All links validated with fix_links.py - no broken references.

docs/api/rhi/opengl/fence/initialize.md

@@ -0,0 +1,23 @@
+# OpenGLFence::Initialize
+
+```cpp
+bool Initialize(bool signaled = false);
+```
+
+初始化 OpenGL 栅栏。
+
+**参数：**
+- `signaled` - 初始是否为 signaled 状态
+
+**返回：** 成功返回 true
+
+**示例：**
+
+```cpp
+OpenGLFence fence;
+fence.Initialize(true);
+```
+
+## 相关文档
+
+- [OpenGLFence 总览](fence.md) - 返回类总览