Update git submodules

* Update docs/submodules/sfc from branch 'stable/gambia'
  - Update documentation

    Change-Id: Ic7af81de3d93462f8ee626576cd4f007d5b95f83
    Signed-off-by: Manuel Buil <mbuil@suse.com>
    (cherry picked from commit 0eb8ab44ae9192f08026f659bc40cddb48703afb)

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index 760c7ac..d8bf425 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit 760c7ac9821bd7f649817a8de3f03a1744b34178
+Subproject commit d8bf4258bc56fd2fe0484baafb0f1d3cc2933098