Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Dup owner, changing to group

    Change-Id: I8ca1501949a0e272e928c6b31b08eba2519951ec
    Signed-off-by: Dan Radez <dradez@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 23be56d..8d3d5e6 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 23be56d9f0801cbc065accf77a850bcc106c1e84
+Subproject commit 8d3d5e679fba8e4140730e60809fc4f71cdc098e