Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 14fc37a82d89d79faf764832fd4386a664654d7a
  - Merge "fix architecture.rst formatting"
  - fix architecture.rst formatting

    Fixed Warning message on SO Architecture page in documentation:
    System Message: WARNING/2
    (/home/docs/checkouts/readthedocs.org/user_builds/onap/checkouts/latest/docs/submodules/so.git/docs/architecture/architecture.rst, line 6)
    Title underline too short.

    Change-Id: Ibf019132e64d1fef3f62efe7a1ce0cbafac647a5
    Issue-ID: SO-2146
    Signed-off-by: k.kazak <k.kazak@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index eaf891e..14fc37a 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit eaf891e4ba066016165c495c8b236423e3f16eb3
+Subproject commit 14fc37a82d89d79faf764832fd4386a664654d7a