Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 4a61b96b7824ee97de904498fcfac6df34dded27
  - Merge "fix image urls in docs"
  - fix image urls in docs

    Corrected image URL for SO Install Docker documentation page
    Corrected images URLs for SO Configure git & gerrit documentation page

    Issue-ID: SO-2150, SO-2151
    Signed-off-by: Katsiaryna Kazak <k.kazak@samsung.com>
    Change-Id: Ib163c3159ae284f6c731795b0cbb53ed176ade11

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 7e9581d..4a61b96 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 7e9581d1cab9604abdf0c3397877a100567bc33c
+Subproject commit 4a61b96b7824ee97de904498fcfac6df34dded27