diff --git a/doc b/doc
index 14b8380..51e9404 160000
--- a/doc
+++ b/doc
@@ -1 +1 @@
-Subproject commit 14b8380090858c3bed5c3b2ee7cf1408aaa133df
+Subproject commit 51e940460ddbaebb7f2ffc48d00d9ef19cf8d33f