Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to c51b795d86381f438619b95a4eb3df8122e2fa73
  - Merge "Fixed error handling in the completion handler"
  - Fixed error handling in the completion handler

    Fixed error handling in the completion handler subflows.

    Issue-ID: SO-2829
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@att.com>
    Change-Id: Id8c7332de6d7b0e382b56e86afa83ff231d8cda3

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 1763235..c51b795 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 17632353502e1750d96b21dc6b201994b626d481
+Subproject commit c51b795d86381f438619b95a4eb3df8122e2fa73