diff --git a/doc b/doc
index 0486489708..2fa21e1af6 160000
--- a/doc
+++ b/doc
@@ -1 +1 @@
-Subproject commit 04864897086c6d5531f5d3b18bc23fa55a6a776d
+Subproject commit 2fa21e1af6dc0961afd80a4d2900f2f87011e316