From 40e2ced85e9f7869be25b254eed429b08352b981 Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Thu, 22 Mar 2018 13:26:45 +0800
Subject: [PATCH] manual: fix core_drivers_reference

---
 doc/manual/core_drivers_reference.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc/manual/core_drivers_reference.rst b/doc/manual/core_drivers_reference.rst
index 66e3cfea6..08633b7c6 100644
--- a/doc/manual/core_drivers_reference.rst
+++ b/doc/manual/core_drivers_reference.rst
@@ -33,7 +33,7 @@ System drivers
 
 
 Digital I/O drivers
-+++++++++++++++++++
+-------------------
 
 :mod:`artiq.coredevice.ttl` module
 ++++++++++++++++++++++++++++++++++