Update git submodules

* Update docs/submodules/releng from branch 'master'
  to d93a6b1018ac65ab709b866350489bb182766f8f
  - Update Jenkins Connection Documentation

    Majority of this change is fixing the syntax to use '..code::' blocks,
    wrapping text >80 characters, and fixing indentation which cause things
    to show up as quote blocks.

    The other main change was updating the link to support when requesting
    the server be connected - helpdesk@ has been replaced by
    support.linuxfoundation.org

    Change-Id: Iee4d1152edc519b7299ffe3f8e9c11b6209559b2
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 5e6970e..d93a6b1 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 5e6970e3eea9c552eb82849fafd5952b7c26bb0a
+Subproject commit d93a6b1018ac65ab709b866350489bb182766f8f