Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Changed path of a file to its correct location

    Recently htmlize.py was changed to a new directory. So, updated the path
    of it in a build script

    Change-Id: Ia409a36fdf38e16e9a66b73a07b7a78faaeb88fe
    Signed-off-by: Sakala Venkata Krishna Rohit <rohitsakala@gmail.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 164ef1c..0431f1d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 164ef1c2bf4cc3564b0044801b349f4733f2e7cf
+Subproject commit 0431f1d23f053fd17b6c89502226325b42f3bafa