Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 536b4cb87b1243c304959f4161f4dc2fc441d94f
  - Merge "cran project docs for h release"
  - cran project docs for h release

    Change-Id: Ibdd26bdfaa3e792f5f5937a97141936bc1869cde
    Signed-off-by: Weichen Ni <niweichen@chinamobile.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 5509a0e..536b4cb 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 5509a0efa0b8c8ebb832ae2bef73dc53ee14e582
+Subproject commit 536b4cb87b1243c304959f4161f4dc2fc441d94f