[Misc] Align CODEOWNERS with module/feature design docs (#5958)

Signed-off-by: hsliu_ustc <hsliu_ustc@noreply.gitcode.com>
Signed-off-by: Hongsheng Liu <liuhongsheng4@huawei.com>
Co-authored-by: hsliu_ustc <hsliu_ustc@noreply.gitcode.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

docs/design/module/input_output_modality_contracts.md

@@ -6,6 +6,8 @@ architecture_state: current
 owners:
   - "@Sy0307"
   - "@amy-why-3459"
+  - "@Gaohan123"
+  - "@alex-jw-brooks"
 document_stewards:
   - "@hsliuustc0106"
   - "@Gaohan123"