Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 56242727d95c32cbe8554ab1c4c213faeb732a39
  - Fix minor documentation issues
    
     - change "sdc-main" to "sdc" (there is no such project as sdc-main)
     - correct typos and grammar
    
    Issue-ID: SDC-2368
    Signed-off-by: kaihlavi <l.kaihlavirt@partner.samsung.com>
    Change-Id: I883d06df2fdde13e46ec7cbfe93d19f5587b8de0
    
1 file changed