Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Landing page adoption"
  - Landing page adoption

    Since testapi have done some changes on scenarios api,
    so landing page should do some adoption.

    Change-Id: Ib5d1df03e2c50c7d6c038200d97f2057b90e48af
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index aa7c1b4..5bec861 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit aa7c1b474fa2d371ef87212abee08469c190dda4
+Subproject commit 5bec8614dd747bf62336ae4ecf5393869643ad09