JDO-779: Fix chapter heading
diff --git a/tck/RunRules.md b/tck/RunRules.md
index 4ba1f62..bac4d66 100644
--- a/tck/RunRules.md
+++ b/tck/RunRules.md
@@ -150,6 +150,7 @@
 <span id="debugging"></span>
 
 Debugging the IUT while Running TCK tests
+-----------------------
 
 Execute \"mvn jdo-exectck:help\" in the TCK directory in order to get
 information on running the TCK tests with a debugger. In particular,