Minor typo

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@272216 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/types/XMLCatalog.java

@@ -175,7 +175,7 @@ public class XMLCatalog extends DataType implements Cloneable, EntityResolver {
             XMLCatalog catalog = (XMLCatalog) o;
             setElements(catalog.getElements());
         } else {
-            String msg = r.getRefId() + " doesn\'t refer to an XCatalog";
+            String msg = r.getRefId() + " doesn\'t refer to an XMLCatalog";
             throw new BuildException(msg);
         }