Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Fix a nit

    Change-Id: I919b065e69515a75f3be90ee9d01437e9fe83449
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 74d117b..2de8ea9 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 74d117bf8fac8d2059f04d07d8b2c58c62d7f2e1
+Subproject commit 2de8ea9fa5a9083133a6c4067391291732781989