Fix typo in PragmaParser

Change-Id: Iaa466504421269f2803c9071c388dda451d60782
diff --git a/zuul/configloader.py b/zuul/configloader.py
index d0c8562..4f51c45 100644
--- a/zuul/configloader.py
+++ b/zuul/configloader.py
@@ -370,7 +370,7 @@
         self.pcontext = pcontext
 
     def fromYaml(self, conf):
-        with configuration_exceptions('project-template', conf):
+        with configuration_exceptions('pragma', conf):
             self.schema(conf)
 
         bm = conf.get('implied-branch-matchers')