Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fix another typos in dockerslicing.md

    Change-Id: I16f28649b000e9370e7c71f36668c417854fb91e
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 55d1287..9a075b1 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 55d1287585fac93d05e9da5aae8cd1f23a372f1d
+Subproject commit 9a075b1187522047c931127d74fbdeb7fd6ac617