minor typo in trigger.c

diff --git a/src/backend/commands/trigger.c b/src/backend/commands/trigger.c
index d169027..43421d6 100644
--- a/src/backend/commands/trigger.c
+++ b/src/backend/commands/trigger.c
@@ -4126,7 +4126,7 @@ AfterTriggerEndXact(bool isCommit)

   /*
-    * Forget the query stack and constrant-related state information.  As
+    * Forget the query stack and constraint-related state information.  As    * with the subtransaction state
information,we don't bother freeing the    * memory here.    */
 


merlin