Merge "Updated Sphinx version to 2.3.0"

diff --git a/docs/submodules/policy/engine.git b/docs/submodules/policy/engine.git
index e28d69b..822d7c8 160000 (submodule)
--- a/docs/submodules/policy/engine.git
+++ b/docs/submodules/policy/engine.git
@@ -1 +1 @@
-Subproject commit e28d69bf71518b466c1b5940fa36feec94d2b60b
+Subproject commit 822d7c8c8bbe020a5f39088eb4a68cd48c7f0d74

diff --git a/docs/submodules/vid.git b/docs/submodules/vid.git
index d5a18e9..79778d1 160000 (submodule)
--- a/docs/submodules/vid.git
+++ b/docs/submodules/vid.git
@@ -1 +1 @@
-Subproject commit d5a18e91a17140e956b453b00fe6bf9de1be9f44
+Subproject commit 79778d1483d96ca9177606c81a39feccdeda9290