[Doc] fix docs Feature Design and Module Design (#283)

Signed-off-by: hsliu <liuhongsheng4@huawei.com>
Signed-off-by: Hongsheng Liu <liuhongsheng4@huawei.com>
Co-authored-by: WeiQing Chen <40507679+david6666666@users.noreply.github.com>

docs/.nav.yml

@@ -36,13 +36,13 @@ nav:
     - design/index.md
     - design/architecture_overview.md
     - Feature Design:
-      - design/feature/multi_request_streaming_design.md
-      - design/feature/omni_connector_design.md
+      - design/feature/disaggregated_inference.md
+      - design/feature/multi_request_streaming.md
       - design/feature/ray_based_execution.md
     - Module Design:
-      - design/module/ar_module_design.md
-      - design/module/dit_module_design.md
-      - design/module/entrypoint_module_design.md
+      - design/module/ar_module.md
+      - design/module/dit_module.md
+      - design/module/entrypoint_module.md
   - Docs Guide: contributing/DOCS_GUIDE.md
 - API Reference:
   - api/README.md