Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Merge "Adapt regex to new flows"
  - Adapt regex to new flows

    ODL Fluorine changes the nsh syntax, so we should adapt it

    Change-Id: I63537f9b880f14b40be2658d3a7ed2e315e86b11
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/sfc b/docs/submodules/sfc
index fe7d96a..59697c6 160000 (submodule)
--- a/docs/submodules/sfc
+++ b/docs/submodules/sfc
@@ -1 +1 @@
-Subproject commit fe7d96a708927b299ddb939f854b09b3452c5304
+Subproject commit 59697c6c0425b3179f0a51e92de7dc035c1ff38c