Update git submodules

* Update docs/submodules/promise from branch 'master'
  - Update User Guide

    Change-Id: I939570ba3a2b8f7551e4d27700e494c5dc2edab7
    Signed-off-by: Bertrand Souville <souville@docomolab-euro.com>

diff --git a/docs/submodules/promise b/docs/submodules/promise
index 6dc47be..d362639 160000 (submodule)
--- a/docs/submodules/promise
+++ b/docs/submodules/promise
@@ -1 +1 @@
-Subproject commit 6dc47bec9e4e23b744c9d74c4fb4846604e7b808
+Subproject commit d362639e2541bb6d37744a47e00e689e971ce541