Update git submodules

* Update docs/submodules/moon from branch 'master'
  - Merge "Fix a potential infinite loop and a bug"
  - Fix a potential infinite loop and a bug

    Change-Id: Idfc361198ea548dc60c4b34e0d5509c8ff227659

diff --git a/docs/submodules/moon b/docs/submodules/moon
index e6d21f0..66d9f12 160000 (submodule)
--- a/docs/submodules/moon
+++ b/docs/submodules/moon
@@ -1 +1 @@
-Subproject commit e6d21f0f716da780b0990a9cc37ef6f2634ee9bf
+Subproject commit 66d9f12b544114d1abc865fac97a2d886a9f9d2d