Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 39aa34b0431e6dc2946b95ae40df5466a3c19d72
  - feat: add slicing nsi basic business code of nsi page
    
    Change-Id: I85ceaad153cf4dd9b9c3d4e6db9d9ce4cf6af4bf
    Issue-ID: USECASEUI-369
    Signed-off-by: cyuamber <xuranyjy@chinamobile.com>
    
1 file changed