Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to c7eddd7f76b56d4bd7e41ef01286633d76914269
  - feat:Optimize string to uppercase of slicing page
    
    Change-Id: I3e990e32f46270754c351f17fa48479162f5ba52
    Issue-ID: USECASEUI-368
    Signed-off-by: cyuamber <xuranyjy@chinamobile.com>
    
1 file changed