Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 208db989045b9a53d9191e7fdac03d266ef73c5c
  - Fix for documentation of DistributeTrafficCheck
    
    Change-Id: I260ef22fb00755e6818868fdadd35bcd88162ffd
    Signed-off-by: Lukasz Rajewski <lukasz.rajewski@orange.com>
    Issue-ID: APPC-1447
    
diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index b98475a..208db98 160000
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit b98475a20856e2a75f7c31a1b49920b3e0c7c38d
+Subproject commit 208db989045b9a53d9191e7fdac03d266ef73c5c