Final doc tuning for Dublin branch

This commit is doing just some small polishing of documentation
before creating Dublin branch for the offline installer.

Issue-ID: OOM-1870

Change-Id: I969b15400eb8064d6d097caa0f712fbf7ec5277a
Signed-off-by: Michal Ptacek <m.ptacek@partner.samsung.com>
3 files changed