Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - [Bug fix] Fix broken urls

    Change-Id: Ide4d6f8a2a54f70522a01a7467bddcd69daf8531
    Signed-off-by: Dimitrios Markou <mardim@intracom-telecom.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index a199aaa..f09fb2d 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit a199aaa6ab6b824262adec66ce5190832f7ce140
+Subproject commit f09fb2d100e06d72568dd039f1cf83dc2c6f5847