Update git submodules

* Update docs/submodules/moon from branch 'master'
  - Fix a bug in unittest

    Change-Id: I9ef73c7c2f85eb8e72bf34d0095df8bdef86f2a9

diff --git a/docs/submodules/moon b/docs/submodules/moon
index d72e7ce..1a4e9d9 160000 (submodule)
--- a/docs/submodules/moon
+++ b/docs/submodules/moon
@@ -1 +1 @@
-Subproject commit d72e7ce30ebc098a6832b32d1a1155b1a7efd51c
+Subproject commit 1a4e9d90b2e0773e0d5d6f1a6741d40e901fd006