Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Fix releasenotes label and include paths for docs

    Change-Id: I50a8f35165954b9b4bdf62864055ad475843c179
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 6f0190c..04ab18a 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 6f0190c0ce9b58ce8cb41084661891cb35864dfe
+Subproject commit 04ab18a5557529efc29da69b676754ee1dcdf5d3