diff --git a/doc b/doc
index 159709826c..4c49aa7830 160000
--- a/doc
+++ b/doc
@@ -1 +1 @@
-Subproject commit 159709826c068aa042aa37328fb62711c85a38bf
+Subproject commit 4c49aa78301d68531241a30b1de4760f8d76a557