Update git submodules

* Update docs/submodules/container4nfv from branch 'master'
  - Merge "Error corrections and architecture option updates"
  - Error corrections and architecture option updates

    Correction of some errors which are permitting a succesfull build
    in the master following these descriptions: http://docs.opnfv.org/en/latest/how-to-use-docs/include-documentation.html#individual-project-documentation

    Moving the architecture options to the Container4NFV wiki and
    leaving only a reference here.

    Change-Id: I7b4debc90997f8812a5681daa8bfa19f90724cef
    Signed-off-by: Gergely Csatari <gergely.csatari@nokia.com>

diff --git a/docs/submodules/container4nfv b/docs/submodules/container4nfv
index 5fecba9..3de1279 160000 (submodule)
--- a/docs/submodules/container4nfv
+++ b/docs/submodules/container4nfv
@@ -1 +1 @@
-Subproject commit 5fecba9bd681444a93db6da7f390f91c25d916f6
+Subproject commit 3de127959e70d9ec1c97e78af7b3a047a2ed7669