Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 2ec3c8dbf2644f3e99e5494620b2811c5dccbac0
  - feat:add monitor echarts data of api function of monitor 5g page
    
    Change-Id: If0f76e8dec5c580b2144ff2f334aea063433ac9f
    Issue-ID: USECASEUI-370
    Signed-off-by: cyuamber <xuranyjy@chinamobile.com>
    
1 file changed