diff --git a/doc b/doc
index 445fbb8838..d9540a2226 160000
--- a/doc
+++ b/doc
@@ -1 +1 @@
-Subproject commit 445fbb883844286c9970e7f4a9c0fad579882618
+Subproject commit d9540a222684ee48118dcfb2b4bce1d6d90a3bf7