Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Updated from global requirements

    Change-Id: Id0eaf823a81196a4f8920576762d801cca0d93ea
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index 5259342..af1f207 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit 52593422296aa6d15f175d10d722f8ebac42c74f
+Subproject commit af1f2079b35947e75221e5abd7e23551e7d925f9