From 3c5370673410e49fc0acbff86d1ba443c72a44a8 Mon Sep 17 00:00:00 2001
From: Andrew Mathas <andrew.mathas@gmail.com>
Date: Tue, 12 Jul 2016 12:31:24 +0200
Subject: [PATCH] Fixing trac link

---
 src/sage/combinat/root_system/cartan_type.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sage/combinat/root_system/cartan_type.py b/src/sage/combinat/root_system/cartan_type.py
index 28fb81db183..b54d2c288cc 100644
--- a/src/sage/combinat/root_system/cartan_type.py
+++ b/src/sage/combinat/root_system/cartan_type.py
@@ -637,7 +637,7 @@ def __call__(self, *args):
             sage: CartanType([CT])
             ['A', 2] relabelled by {1: -1, 2: -2}
 
-        Check the errors from trac:`20973'::
+        Check the errors from trac:`20973`::
 
             sage: CartanType(['A',-1])
             Traceback (most recent call last):