Update git submodules

* Update docs/submodules/clover from branch 'master'
  - Merge "Write A-B configuration guide and align with SDC guide"
  - Write A-B configuration guide and align with SDC guide

    - Document A-B sample validation script
    - Remove redundant TOC in docs
    - Provide reference links in SDC guide
    - Additional edits to SDC guide

    Change-Id: Id4135c99df688f7de1af18017c847a6546082bfc
    Signed-off-by: Eddie Arrage <eddie.arrage@huawei.com>

diff --git a/docs/submodules/clover b/docs/submodules/clover
index 74375eb..6984223 160000 (submodule)
--- a/docs/submodules/clover
+++ b/docs/submodules/clover
@@ -1 +1 @@
-Subproject commit 74375eb2f24b82a06fb6080d70c071dd5b71f676
+Subproject commit 69842232eff555c3a3cc0da1ea6809fc0d38834d