Update git submodules

* Update docs/submodules/vvp/documentation.git from branch 'master'
  to 6a0df03fa696990c9038f176fe31b776fc511b73
  - Automation adds index.rst
    
    Issue-ID: CIMAN-376
    
    Change-Id: Ib1299d7381956aee91970552026f06d9e75fbe86
    Signed-off-by: lf-jobbuilder <releng+lf-jobbuilder@linuxfoundation.org>
    
1 file changed