Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to cd1c4bc83b4571f1b5f03539abea2ccff97caf67
  - Merge "Update documentation"
  - Update documentation

    Fix several typos in Build and Install parts of docs
    Fix paths of configuration files in Install part
    Remove note discouraging making changes in config files

    Issue-ID: OOM-2158
    Issue-ID: OOM-2197

    Signed-off-by: Denis Kasanic <d.kasanic@partner.samsung.com>
    Change-Id: I28d9b43a56791bc3c1c53c12f7c852f5a1a885c6