Update git submodules

* Update docs/submodules/escalator from branch 'master'
  - Merge "Please vote +1 if you agree this action. Thanks"
  - Please vote +1 if you agree this action. Thanks

    Change-Id: Ib60b9284a919e02b9dd6c74b120311c725a24a43
    Signed-off-by: Jie Hu <hu.jie@zte.com.cn>

diff --git a/docs/submodules/escalator b/docs/submodules/escalator
index d896ae4..1cd62a0 160000 (submodule)
--- a/docs/submodules/escalator
+++ b/docs/submodules/escalator
@@ -1 +1 @@
-Subproject commit d896ae4dc8b96acd1b720c29817b6b7faf7f086a
+Subproject commit 1cd62a0ffb9bc6a1198c51e2500a7c7bfcb20469