Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 2ca91d0f083ba214091bf0719c684baf0ec71577
  - Update "Human Interfaces" Links to ReadTheDocs
    
    Change-Id: I72a55a5743cbe9b649ddc6c2bbf5f0c5201b224a
    Issue-ID: SDC-2300
    Signed-off-by: Ofir Sonsino <os0695@intl.att.com>
    
1 file changed