diff --git a/doc b/doc
index 9ab32b867d..77a9ff5057 160000
--- a/doc
+++ b/doc
@@ -1 +1 @@
-Subproject commit 9ab32b867d28d3eb9087a7ca0bcfe906a09b6683
+Subproject commit 77a9ff505783f1a324f4fca32bead58ed7f5a3bf