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/sampler/sampler.md

@@ -9,11 +9,11 @@
 | 方法 | 文档 |
 |------|------|
 | `Initialize` | [详细文档](../../../threading/task-system/initialize.md) |
-| `Shutdown` | [详细文档](../../../threading/task-system/shutdown.md) |
+| `Shutdown` | [详细文档](../../sampler/shutdown.md) |
 | `Bind` | [详细文档](../../shader/bind.md) |
 | `Unbind` | [详细文档](../../shader/unbind.md) |
 | `GetID` | [详细文档](get-id.md) |
-| `GetNativeHandle` | [详细文档](../../buffer/get-native-handle.md) |
+| `GetNativeHandle` | [详细文档](../../sampler/get-native-handle.md) |
 
 ## 相关文档