Update git submodules

* Update docs/submodules/so.git from branch 'dublin'
  to 7db2029f0b49053428311e43c7a88165cb1762d7
  - url correction and improve API doc
    Issue-ID: SO-2245

    Signed-off-by: Rene_Robert <rene.robert@orange.com>
    Change-Id: Ife95e64f0bed03e779f8ffef180f2a68ed0eb371
    (cherry picked from commit aa60635864b19e2790a0515ec398ba48be2bb75d)

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 4ab98f6..7db2029 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 4ab98f619711ab278d4aceb7c66618567a2d49b9
+Subproject commit 7db2029f0b49053428311e43c7a88165cb1762d7