Update git submodules

* Update docs/submodules/apex from branch 'stable/fraser'
  - Update docs for 6.2

    Change-Id: I969f72b5b097d6f23a8082021b886b21198fafb2
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 2d102c8..8682682 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 2d102c895e27038b064ade1ca8f4ad6be2510cc5
+Subproject commit 86826823c9a8cf0f10a6a903c8256bcc7222f5d7